Human Farm Investigation Investigation Mechanics
Evidence, suspicion, and raid eligibility behind Iori's undercover work.
Investigation layer overview
Human Farm : Investigation : is not only a farm RPG — investigation mechanics track how completely Iori builds a case against the underground operation while maintaining cover. These hidden and visible meters interact with City Quests, handler reports, farm behavior, and ending eligibility.
Understanding investigation UI prevents silent route failures more effectively than replaying gallery scenes via unlocker — Cheats and Unlockers.
Evidence and case progress
Evidence accumulates when Iori completes police-assigned tasks:
- Tsubaki document requests and deadlines
- Maria handler chain deliveries — Police Allies
- Rui field pickups in city districts — City Locations
- Photograph or examine events tied to story days
The game surfaces evidence as menu percentages, log entries, or handler dialogue lines rather than one universal number. Community guides call maximum state raid-ready — required for true ending paths in True Ending Checklist.
Missing evidence caps you at incomplete investigation endings — Ending Routes.
Suspicion and cover
Suspicion measures how believable Iori is as farm staff. It rises when you:
- Skip farm-shift or Boss-assigned chores — Underground Farm
- Enter restricted areas without story permission
- Choose confrontational dialogue with Boss or workers
- Fail to return from city trips before curfew-style triggers
High suspicion routes to blown cover endings. Some scenes only appear on high-suspicion paths — How to Unlock Scenes.
Low suspicion alone does not guarantee best ending — evidence still matters.
Raid trigger mechanics
The raid prompt appears when investigation thresholds satisfy Tsubaki and handler checks. Accepting raid early can:
- Lock remaining scene windows
- Route away from true ending if checklist incomplete
- Skip optional epilogue variants
Delay raid until True Ending Checklist satisfied unless hunting alternate endings deliberately.
UI and feedback problems
Investigation feedback is subtle by design:
- Handlers comment on missing tasks obliquely
- Quest icons may not reappear if day window passed
- Some meters update only after sleep transition
Mitigations:
- Enable run mode for quest punctuality — Settings and Run Mode
- Maintain labeled saves — Beginner Tips
- Use Ending Tracker parallel to play
Relationship vs investigation
Trust with Maria, Rui, farm cast, and Alice modifies dialogue and epilogues but does not replace evidence thresholds. Romance-heavy play without city quests still fails investigation checks — How to Get Endings.
Items coupling
Quest items in Items often increment investigation silently upon delivery. Wrong recipient may consume item without credit.
Demo scope
Demo Day 1 teaches cover basics but not full meter arc — Demo Day 1.
Patch notes
Restored content via Official Patch may add evidence-bearing scenes. Re-verify meter max after patching.
Related reading
Investigation mechanics reward attentive police play — farm sim habits alone do not finish Iori’s case.
Keep this systems › investigation-mechanics page open beside your Steam save list when comparing flags across days.
Meter reading at raid threshold
Evidence and suspicion UI use separate color bands near raid eligibility. Maxing evidence while suspicion spikes can still route to blown-cover endings — monitor both until Story Overview raid chapter.
Dual meter watch
Evidence max with high suspicion still routes to blown-cover endings. Monitor both meters through raid-prep week.
Raid threshold UI
Raid-ready prompts can appear while suspicion remains elevated. Read both meter colors before accepting Tsubaki final orders.
Handler warning gaps
Handlers warn about suspicion inconsistently. Track farm behavior manually on Boss-heavy days.
Frequently Asked Questions
Quick answers to the most common questions.
Where do I see evidence percent?
Handler UI and Tsubaki messages — not always one number.
What raises suspicion fastest?
Skipping Boss farm tasks repeatedly.
Can I raid early?
Yes, but it risks endings — [Ending Routes](/walkthrough/ending-routes/).
Does unlocker fill evidence?
No — story quests only.