The Incident of No Survivors on Hachishima Island by the Great Detective - Revealing the Real Murderer and Plot Analysis

1. Analysis of Act One

1. The Kuchiki family’s secret operations

- Hiding the truth behind the demise of the Miyamizu family

- Move to Hachiko Island and adopt orphans

- Cover up internal plans from the outside world

2. The influence of the Nakagawa family

- Disrupted Kuchiki's plan

- A means to remove blockers

2. Answers to the second act

1. Secret room manufacturing techniques

- Utilize bed characteristics

- Death instinct

2. Chamber conditions

- The deceased survived until the secret room was completed

- Necessary props: bed, keys, trace cleaning

3. Analysis of subsequent stages

• Act Three: Props and Conditions

- Swings, seesaws, stone piers

- The deceased needs to bleed

• Act 4: Sequence and key props

- Lock the door, put the key, and clean up the traces

- Items from the dead

• Act 5: Cause of Death and Formation of the Secret Room

-Death of thirst

- A self-inflicted secret room

4. Climax Revealed

• Act 6: Extra props

- Bookshelf, twine

- Permanent flaw: legacy props

5. Ending Revealed

• Act 7: Chamber of Secrets Genre

- Mechanical secret room

- Specific props: chimney, thin hemp rope

• Act 8: Diary Analysis

- Identity of diary owner

- Clues on the remaining pages

- Relationships with historical figures

• Act 9: Key Plot

- family secrets

- Lifespan changing consequences

- The truth revealed: Murderer Kuchiki Koji

• Act 10: Final Answer

- Character of Taichiro Nakagawa

- The reason why the Nakagawa family disappeared

- Association of secret rooms with notes

- The murderer of all cases: Koji Kuchiki

- Ending: the fate of all characters

Summary: Through step-by-step revelations, players can unravel the complex mystery of the ever-changing Detective Hachikojima incident and find the murderer Kuchiki Koji. I hope this detailed analysis will be helpful to your gaming experience! More strategies are available on the source code website.