Human Farm Investigation Maria, Rui, and Tsubaki

Overview

Three police-aligned characters coordinate Iori’s undercover mission in Human Farm : Investigation : — Maria (handler and cafe operator), Rui (field support), and Tsubaki (station liaison). Their quests, deadlines, and conflicting guidance drive investigation progress and ending branches more than optional farm socializing.

This guide focuses on gameplay relationships. Character ages are twenty-plus. Steam release app 3953160, August 7, 2026.

Maria — strategic handler

Role: Primary handler using a cafe front for meetings. Maria assigns evidence priorities and mediates police strategy with Iori’s cover safety.

Locations: Cafe Hub, city back rooms, select farm debrief scenes.

Gameplay: Maria quests often unlock items and evening scenes. Ignoring Maria delays raid eligibility and true ending prep — True Ending Checklist.

Route tips: Visit cafe hub after farm mornings when message icons appear. Deliver quest items before night windows — Items.

Conflicts: Maria and Rui sometimes issue competing priorities same day; save before choosing which appointment to keep if both are timed.

Rui — field support

Role: Field agent handling surveillance, pickups, and city errands Maria does not cover alone.

Locations: City districts in City Locations, occasional farm edge meetings.

Gameplay: Rui chains parallel Maria’s; some endings favor Rui evidence emphasis — Ending Routes.

Route tips: Stack Rui errands with Alice performance nights when maps overlap to save in-game hours.

Conflicts: Over-prioritizing Rui without Maria debriefs can stall cafe hub flags.

Tsubaki — station liaison

Role: Deadline-driven contact for paperwork, raid timing, and formal evidence thresholds.

Locations: Phone-style prompts, station visits, end-of-day reports.

Gameplay: Missing Tsubaki deadlines is the fastest way to incomplete investigation endings. She gates raid prompts tied to investigation meter max — Investigation Mechanics.

Route tips: Read Tsubaki messages immediately when farm intro completes; some timers start silently.

Conflicts: Farm Boss demands may overlap Tsubaki appointment windows — use run mode — Settings and Run Mode.

Combined routing strategy

Balanced first run:

1. Complete Tsubaki mandatory tasks first (hard deadlines)
2. Alternate Maria and Rui primary quests daily
3. Use cafe hub as checkpoint before returning underground — Cafe Hub
4. Save before mid-game handler split noted in Ending Routes

True ending expects both Maria and Rui core chains complete, not maximal affection with only one.

Scenes and gallery

Police allies share a portion of thirty-four story events. Unlock details: How to Unlock Scenes and Scene Checklist. Scene unlocker does not replace quest completion for endings.

Suspicion and cover

Handlers warn when suspicion rises, but warnings are not automatic — track farm behavior with Boss and workers — Farm Cast.

Related pages

• Iori
• City Quests
• Story Overview
• Character Roster

Police allies are your mission control — neglect them and Iori’s investigation fails no matter how many farm scenes you unlock.

Keep this characters › police-allies page open beside your Steam save list when comparing flags across days.

Handler appointment windows

Tsubaki and Maria rarely share the same evening slot, but both can page you on raid-prep days. Read messages immediately on farm spawn; delayed opens sometimes consume the hour slice needed for city return.

Message timing

Handler texts often arrive on farm spawn. Open them before walking to city transit; unread prompts can silently consume the travel hour slice.

Debrief room priority

Cafe back-room scenes consume evening slots. Compare True Ending Checklist before accepting Maria invites on dorm-scene nights.