Human Farm Investigation Characters and Cast
Undercover allies, farm residents, and city contacts in Iori's investigation.
Meet the cast
Human Farm : Investigation : centers on Iori, an undercover policewoman, and the adults she works beside while infiltrating an illegal underground farm. とっくり海月 and 072 Project built the Steam release (app 3953160, August 7, 2026) as a character-driven investigation RPG with thirty-four story events and five or more endings. Every mature-scene cast member is twenty years old or older per official store listings.
This hub links deeper pages for route planning without duplicating full flag tables — pair with How to Unlock Scenes and Scene Checklist.
Pages in this section
Character Roster — quick-reference table of names, roles, and first appearances.
Iori — protagonist perspective, cover responsibilities, and player decision framing.
Police Allies — Maria, Rui, and Tsubaki: handlers, evidence chains, and conflicting instructions.
Farm Cast — Aina, Karen, the Boss pastry chef, and farm-side cast with city ties.
Alice — city singer, identity mystery, performance quests, and investigation routing.
Cast overview
| Name | Role | Primary location |
|---|---|---|
| Iori | Undercover officer | Farm + city |
| Maria | Handler, cafe | City / cafe hub |
| Rui | Field support | City |
| Tsubaki | Station liaison | Police channels |
| Aina | Farm resident | Underground farm |
| Karen | Farm resident | Underground farm |
| Boss | Pastry chef manager | Farm / kitchen |
| Alice | Singer | City venues |
Relationship emphasis shifts ending epilogues — Ending Routes — but Investigation is not a pure dating sim; investigation meters still gate finales.
How characters tie to systems
- Farm scenes need daily labor with Aina, Karen, and Boss — Underground Farm
- Handler scenes need city quests — City Quests
- Alice links performance districts — City Locations
- Suspicion rises if you ignore Boss orders while chasing handlers — Investigation Mechanics
Spoilers and routes
Character pages discuss route philosophy and unlock habits without printing every dialogue choice. For day-specific triggers, use walkthrough checklists:
Series veterans
Maria, farm workers, and management archetypes evolve from Human Farm: Rehabilitation and Practice Section. Series Comparison notes recurring themes; Investigation adds heavier police coordination.
Related hubs
- Walkthrough — when to visit each character
- Map — where NPCs stand for events
- Guides — scene and ending how-tos
- Review — narrative quality discussion in Full Review
Characters are the face of the investigation — learn roles here, then specialize per page.
Voice acting and localization note
Cast names display per Steam language setting. This English wiki uses official Steam English spellings; Japanese source names may differ in credits. Route logic is language-independent — flags do not change between EN and JA builds.
Non-romantic route framing
Investigation is not a pure dating sim. Character pages describe trust and quest chains rather than “best girl” rankings. Endings emerge from investigation completeness plus relationship emphasis — see How to Get Endings.
Frequently Asked Questions
Quick answers to the most common questions.
Who is the protagonist?
Iori, an undercover policewoman — see [Iori](/characters/iori/).
Are characters age-appropriate adults?
Yes — all mature-scene cast are twenty-plus per official listings.
Which page lists everyone?
[Character Roster](/characters/roster/).
Do routes use affection points?
Trust and investigation flags matter more — see [Police Allies](/characters/police-allies/).