The following is a guide to playing through Chaos;Head NoAH in the optimal route order and achieving all endings.
Chaos;Head NoAH is available on Steam and Nintendo Switch digitally; a physical release through the Chaos; Double Pack is also available.
The recommended play order is as follows: Silent Sky → Crying Sky → Daydream → Moon and Sun → A Bloody Contract for Your Sins → A Disease that Leads to Slaughter → Deus Ex Machina → Anima Archetype → Blue Sky.
Players using the Chaos;Head NoAH Overhaul Patch are advised to follow this guide instead.
You can watch the video, or read the guide below.
Sign in to KKB Community to check milestones and keep your progress on every device.
Preface: Delusion Triggers
At different points in Chaos;Head NoAH, you will come into contact with the “Delusion Trigger” system. Through it, you can choose if the protagonist experiences a positive delusion, a negative delusion, or no delusion at all.
Use the ZL button on Switch or click the green button on Steam to lock into a positive delusion; the ZR button or red button to lock into a negative delusion; or proceed normally to stay in reality.
During your first playthrough, it is recommended that you experiment by trying out different positive, negative, and neutral choices as you go.
You are locked into the Silent Sky ending during your first playthrough; your delusions will have no effect on the ending until your second and subsequent playthroughs.
Silent Sky Ending
Chapter One
Toward the beginning of this chapter, you will be presented with a series of YES/NO questions related to school swimsuits. Answer these questions as you’d like to.
For the “...wore glasses.” question, select YES on one playthrough to make Hazuki wear glasses and unlock “Four-Eyes Fan.” You will also need to see the alternate no-glasses appearance for CG completion; the Anima Archetype route later in this guide uses NO.
Chapter Two
You will be presented with a checklist of questions when Takumi visits the hospital. Your results will appear in the “TIPS” menu.
Save before submitting the questionnaire.
- Check every box, submit the questionnaire, and open the resulting medical-chart entry in the TIPS menu to unlock “Gigalomaniac.”
- Reload your save, submit the questionnaire with no boxes checked, and open the resulting TIPS entry to unlock “Ria-ju.”
Chapter Six
You will be presented with a series of YES/NO questions during the scene at the O-FRONT.
To view this scene’s bad ending, save your game here; then, answer NO, NO, and NO.
To proceed with the story, answer YES, YES, NO, NO, and YES.
Chapter Ten
You will achieve the Silent Sky ending during this chapter.
The following story achievements unlock naturally while completing this first playthrough.
Crying Sky Ending
After you have achieved the Silent Sky ending, your next stop will be the Crying Sky ending. Reaching this ending will require you to start a new game and view at least ten of the below-listed scenes. To save time, you can engage the Skip mode to fast-forward through text you have already read.
You can make different swimsuit-preference choices, if you’d like, to alter a certain character’s appearance; you can also experiment with the hospital checklist (e.g., check off no, some, most, or all options) to receive different results in the TIPS menu.
There will be a handful of new scenes interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
Note that you may additionally encounter new YES/NO prompts tied to the heroines throughout this playthrough. We will use these in subsequent playthroughs to branch into heroine routes, but for the time being, answer NO to all of these prompts.
Chapter One
Chapter Two
Chapter Three
Chapter Four
Chapter Five
Chapter Six
O-FRONT YES/NO prompts: YES, YES, NO, NO, YES.
Chapter Seven
Chapter Eight
Chapter Nine
If you’ve successfully viewed at least ten of the above scenes, the game will branch into the Crying Sky ending during chapter ten’s underground train station scene.
The route itself only needs ten points. The full 18-scene set and its achievement are covered again in Achievement Cleanup.
Daydream Ending
Once you’ve achieved the Crying Sky ending, restart the game and make the following choices.
Chapter One
- Subsequent YES/NO prompts:
- “I like big sister types more.”: NO
- “I like girls with no chests.”: YES
- “I have another 3D girlfriend besides you.”: NO
- “You’re cute, I’ll admit that.”: YES
- “I want to kiss you!”: YES
As you progress, a handful of Nanami-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Daydream ending in chapter six.
Moon and Sun Ending
Chapter One
- Subsequent YES/NO prompts:
- “It’s just a coincidence.”: NO
- “I’m hallucinating.”: NO
- “Whoever did it is inside the school.”: YES
- “They’re taunting me.”: YES
- “I want to erase it now.”: YES
As you progress, a handful of Yua-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Moon and Sun ending in chapter seven.
A Bloody Contract for Your Sins Ending
Chapter One
Trigger #2: In the Base with Nanami, choose Negative or remain Neutral.
Chapter Two
- Subsequent YES/NO prompts:
- “FES wants me to save her.”: YES
- “I want to give in to her temptation.”: NO
- “It would feel so good to jump.”: YES
- “I’d be willing to die if I could do it with FES.”: YES
- “I want to be released from everything.”: YES
As you progress, a handful of Ayase-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the A Bloody Contract for Your Sins ending in chapter seven.
A Disease that Leads to Slaughter Ending
Chapter One
Trigger #2: In the Base with Nanami, choose Negative or remain Neutral.
Chapter Two
Trigger #8: During the Phantasm performance, choose Positive or remain Neutral.
Chapter Three
Trigger #10: At Center Street with Sena, choose either Positive or Negative.
- Subsequent YES/NO prompts:
- “She came to save me?”: YES
- “The transfer student is a professional exorcist.”: YES
- “Her wimpy looks are actually camouflage.”: YES
- “She is here to kill Rimi.”: YES
- “You two kill each other!”: NO
As you progress, a handful of Kozue-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the A Disease that Leads to Slaughter ending in chapter seven.
Deus Ex Machina Ending
Chapter One
Trigger #2: In the Base with Nanami, choose Negative or remain Neutral.
Chapter Two
Trigger #8: During the Phantasm performance, choose Positive or remain Neutral.
Chapter Three
Trigger #10: At Center Street with Sena, remain Neutral.
- Subsequent YES/NO prompts:
- “Look at me more.”: YES
- “For her, I wouldn’t mind begging on my knees.”: YES
- “I wish she’d step on me, actually.”: YES
- “That sword’s going to run me through, isn’t it? I can tell.”: YES
- “She’s going to kill me with that sword…”: NO
As you progress, a handful of Sena-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Deus Ex Machina ending in chapter seven.
Anima Archetype Ending
Chapter One
- Subsequent YES/NO prompts:
- “…tied her hair with ribbons.”: YES
- “…wore glasses.”: NO
- “…wore over-the-knee socks.”: YES
- “…wore a long skirt.”: NO
- “…was posing like a soldier at attention.”: YES
As you progress, a handful of Rimi-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Anima Archetype ending in chapter eight.
Blue Sky Ending
A new main menu option, “blue sky,” will unlock when you have completed all other routes. Select it to begin the true ending.
A series of YES/NO prompts will be presented to you. Answer them as follows: YES, YES, NO, NO, NO, YES, YES, YES, YES, YES, YES, YES, YES, YES, YES.
Continue to achieve the Blue Sky ending and complete Chaos;Head NoAH.
Achievement Cleanup
After completing all nine endings, use the following checklists to collect the remaining achievements and event CGs.
Whose Eyes Are Those?
This achievement is connected to the additional scenes used to reach the Crying Sky ending. Start a new playthrough and view every scene listed below. The route itself only needs ten of them, but the achievement requires all 18 credited scenes.
These checkboxes are synchronized with the Crying Sky route above, so anything you already marked there remains complete here.
Positive and Negative Delusions
To unlock “Positive Person” and “Negative Person,” view both the positive and negative variation of every Delusion Trigger. Use the chapter-by-chapter checklist below while replaying the game. The green boxes track positive delusions and the red boxes track negative delusions.
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Missable CGs
Some event CGs only appear when you let a Delusion Trigger pass without choosing either the positive or negative option. Use the eight neutral-choice boxes below to cover these missable variations.
For “CG Complete,” also make sure you have seen both of Hazuki’s Chapter One appearance variations by answering the glasses question both YES and NO on separate playthroughs.
Thanks and Notes
A special thanks to repgatu, RCgamer77, MrMonday for original baseline content, and gameline.jp for inspiration.
Unauthorized rehosting of this guide is not condoned. Please do not rehost and/or modify this guide to host in other spaces without permission. Contact [email protected] to request permission.
Found an issue with this guide? Feel free to reach out; we’ll address it!
Every route, ending, delusion, CG, and achievement is complete. Congratulations on finishing Chaos;Head NoAH!
The following is a guide to playing through Chaos;Head NoAH in the optimal route order and achieving all endings.
Chaos;Head NoAH is available on Steam and Nintendo Switch digitally; a physical release through the Chaos; Double Pack is also available.
The recommended play order is as follows: Silent Sky → Crying Sky → Daydream → Moon and Sun → A Bloody Contract for Your Sins → A Disease that Leads to Slaughter → Deus Ex Machina → Anima Archetype → Blue Sky.
Players using the Chaos;Head NoAH Overhaul Patch are advised to follow this guide instead.
You can watch the video, or read the guide below.
Table of Contents
Preface: Delusion Triggers
At different points in Chaos;Head NoAH, you will come into contact with the “Delusion Trigger” system. Through it, you can choose if the protagonist experiences a positive delusion, a negative delusion, or no delusion at all.
Use the ZL button on Switch or click the green button on Steam to lock into a positive delusion; the ZR button or red button to lock into a negative delusion; or proceed normally to stay in reality.
During your first playthrough, it is recommended that you experiment by trying out different positive, negative, and neutral choices as you go.
You are locked into the Silent Sky ending during your first playthrough; your delusions will have no effect on the ending until your second and subsequent playthroughs.
Silent Sky
Chapter One: Toward the beginning of this chapter, you will be presented with a series of YES/NO questions related to school swimsuits. Answer these questions as you’d like to.
Chapter Two: You will be presented with a checklist of questions when Takumi visits the hospital. Answer these questions as you’d like to. Your results will appear in the “TIPS” menu.
Chapter Six: You will be presented with a series of YES/NO questions during the scene at the O-FRONT.
To view this scene’s bad ending, save your game here; then, answer NO, NO, and NO.
To proceed with the story, answer YES, YES, NO, NO, and YES.
Chapter Ten: You will achieve the Silent Sky ending during this chapter.
Crying Sky
After you have achieved the Silent Sky ending, your next stop will be the Crying Sky ending. Reaching this ending will require you to start a new game and view at least eleven of the below-listed delusions. To save time, you can engage the Skip mode to fast-forward through text you have already read.
You can make different swimsuit-preference choices, if you’d like, to alter a certain character’s appearance; you can also experiment with the hospital checklist (e.g., check off no, some, most, or all options) to receive different results in the TIPS menu.
There will be a handful of new scenes interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
Note that you may additionally encounter new YES/NO prompts tied to the heroines throughout this playthrough. We will use these in subsequent playthroughs to branch into heroine routes, but for the time being, answer NO to all of these prompts.
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumі ー Neutral
- Delusion Trigger #3: Yua is looking at you from across the street ー Neutral
Chapter Two:
- Delusion Trigger #8: During the Phantasm performance, while watching FES ー Positive
- Delusion Trigger #9: After the Pһantasm performance, while playing ESO ー Positive
Chapter Three:
- Delusion Trigger #12: At the Base, looking at your monitor, right before Rimi’s first appearance ー Positive
- Delusion Trigger #14: On the school rooftop, after Rimi talks to you in class ー Negative
Chapter Four:
- Delusion Trigger #17: At the net café with Yua ー Neutral
- Delusion Trigger #18: In the park ー Negative
Chapter Five:
- Delusion Trigger #20: The first trigger of the chapter, at school ー Positive
- Delusion Trigger #24: After school, at the shoe lockers when Rimi covers your eyes ー Negative
Chapter Six:
- Delusion Trigger #25: When Shougun enters the chat after the earthquake ー Positive
- Delusion Trigger #28: Looking down at the crowd ー Neutral
- O-FRONT YES/NO prompts: YES, YES, NO, NO, YES.
Chapter Seven:
- Delusion Trigger #30: After waking up in the hospital and talking to the nurse ー Negative
- Delusion Trigger #34: While talking to Sena and Kоzue ー Negative
Chapter Eight:
- Delusion Trigger #36: When you and Misumi enter Ayase’s hospital room ー Neutral
- Delusion Trigger #37: When Aуase starts talking to you about defeating Gladiale in her hospital room ー Negative
Chapter Nine:
- Delusion Trigger #43: When you hear Nanami’s voice after chatting with Grimm ー Positive
- Delusion Trigger #44: When you’re standing before a crowd of people ー Neutral
If you’ve successfully viewed at least eleven of the above scenes, the game will branch into the Crying Sky ending during chapter ten’s underground train station scene.
Daydream
Once you’ve achieved the Crying Sky ending, restart the game and make the following choices.
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumi ー Negative
- Delusion Trigger #2: In the Base with Nanami ー Positive
- Subsequent YES/NO prompts:
- “I like big sister types more.”: NO
- “I like girls with no chests.”: YES
- “I have another 3D girlfriend besides you.”: NO
- “You’re cute, I’ll admit that.”: YES
- “I want to kiss you!”: YES
As you progress, a handful of Nanami-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Daydream ending in chapter six.
Moon and Sun
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumі ー Neutral
- Subsequent YES/NO prompts:
- “It’s just a coincidence.”: NO
- “I’m hallucinating.”: NO
- “Whoever did it is inside the school.”: YES
- “They’re taunting me.”: YES
- “I want to erase it now.”: YES
As you progress, a handful of Yua-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Moon and Sun ending in chapter seven.
A Bloody Contract for Your Sins
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumі ー Negative
- Delusion Trigger #2: In the Base with Nanami ー Negative or Neutral
Chapter Two:
- Delusion Trigger #8: During the Phantasm performance, while watching FES ー Negative
- Subsequent YES/NO prompts:
- “FES wants me to save her.”: YES
- “I want to give in to her temptation.”: NO
- “It would feel so good to jump.”: YES
- “I’d be willing to die if I could do it with FES.”: YES
- “I want to be released from everything.”: YES
As you progress, a handful of Aуase-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the A Bloody Contract for Your Sins ending in chapter seven.
A Disease that Leads to Slaughter
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumi ー Negative
- Delusion Trigger #2: In the Base with Nanami ー Negative or Neutral
Chapter Two:
- Delusion Trigger #8: During the Pһantasm performance, while watching FES ー Positive or Neutral
Chapter Three:
- Delusion Trigger #10: At Center Street with Sena ー Positive or Negative
- Delusion Trigger #13: In the classroom, Kоzue has just joined your class ー Positive
- Subsequent YES/NO prompts:
- “She came to save me?”: YES
- “The transfer student is a professional exorcist.”: YES
- “Her wimpy looks are actually camouflage.”: YES
- “She is here to kill Rimi.”: YES
- “You two kill each other!”: NO
As you progress, a handful of Kоzue-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the A Disease that Leads to Slaughter ending in chapter seven.
Deus Ex Machina
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumi ー Negative
- Delusion Trigger #2: In the Base with Nanami ー Negative or Neutral
Chapter Two:
- Delusion Trigger #8: During the Pһantasm performance, while watching FES ー Positive or Neutral
Chapter Three:
- Delusion Trigger #10: At Center Street with Sena ー Neutral
- Subsequent YES/NO prompts:
- “Look at me more.”: YES
- “For her, I wouldn’t mind begging on my knees.”: YES
- “I wish she’d step on me, actually.”: YES
- “That sword’s going to run me through, isn’t it? I can tell.”: YES
- “She’s going to kill me with that sword…”: NO
As you progress, a handful of Sena-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Deus Ex Machina ending in chapter seven.
Anima Archetype
Chapter One:
- Delusion Trigger #1: While in class, talking to Misumi ー Positive
- Subsequent YES/NO prompts:
- “…tied her hair with ribbons.”: YES
- “…wore glasses.”: NO
- “…wore over-the-knee socks.”: YES
- “…wore a long skirt.”: NO
- “…was posing like a soldier at attention.”: YES
As you progress, a handful of Rimi-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.
The game will branch into the Anima Archetype ending in chapter eight.
Blue Sky
A new main menu option, “blue sky,” will unlock when you have completed all other routes. Select it to begin the true ending.
A series of YES/NO prompts will be presented to you. Answer them as follows: YES, YES, NO, NO, NO, YES, YES, YES, YES, YES, YES, YES, YES, YES, YES.
Continue to achieve the Blue Sky ending and complete Chaos;Head NoAH.
Thanks and Notes
A special thanks to repgatu, RCgamer77, MrMonday for original baseline content, and gameline.jp for inspiration.
Unauthorized rehosting of this guide is not condoned. Please do not rehost and/or modify this guide to host in other spaces without permission. Contact [email protected] to request permission.
Found an issue with this guide? Feel free to reach out; we’ll address it!
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