Human Farm Investigation Story Walkthrough
Day structure, route branches, and true ending requirements without losing the mystery.
How to use this walkthrough
Human Farm : Investigation : spans multiple in-game days of undercover work, farm labor, city investigation, and branching story content. The walkthrough hub organizes story progression separately from mechanical guides in Guides and reference tables in Systems. Use this section when you know what buttons to press but need where to be on the calendar.
The full Steam release (app 3953160, August 7, 2026) includes five or more endings and thirty-four story events. Walkthrough pages assume the paid campaign — demo players should finish Demo Day 1 then restart on a full save.
Pages in this section
Story Overview — chronological summary of Iori’s assignment, key cast introductions, and day-by-day priorities without exhaustive flag tables. Start here on a first run.
Ending Routes — branch map for five-plus finales, decision windows, and how investigation vs cover vs relationship choices diverge. Featured for players on second playthrough.
True Ending Checklist — line-by-line requirements for the best outcome, including city quests, items, and scene dependencies. Spoiler-heavy by design.
Day-by-Day Walkthrough — farm vs city daily priorities, save habits, and calendar discipline linking scenes to endings (featured).
Cross-link How to Get Endings for philosophy and Ending Tracker for interactive progress.
Recommended path through the hub
| Player goal | Read order |
|---|---|
| First play, minimal spoilers | Story Overview only |
| Missed an ending | Ending Routes → True Ending Checklist |
| Gallery complete, bad ending | True Ending Checklist → Investigation Mechanics |
| Speedrun | Ending Routes minimal path → Keyboard Controls |
Always keep labeled saves before nodes listed in Ending Routes — Beginner Tips explains slot naming.
Story premise (spoiler-light)
Iori, a policewoman, infiltrates an illegal underground human farm as new staff while reporting to handlers Maria, Rui, and Tsubaki. Surface city quests and cafe meetings coordinate the case against the operation led in part by the Boss pastry chef. Farm residents Aina and Karen anchor daily farm RPG tasks; singer Alice connects city performance plots.
The third series entry after Rehabilitation and Practice Section — see Series Comparison for tone differences.
Daily structure reference
Each day typically includes:
- Morning objectives and messages
- Farm shift requirements — Underground Farm
- Optional or mandatory city travel — City Quests
- Evening scene windows — How to Unlock Scenes
- Debrief and sleep advancing calendar
Run mode must be enabled — Settings and Run Mode — or evening scenes expire.
Spoiler policy
Story Overview uses moderate spoilers (character roles, general plot turns). Ending Routes and True Ending Checklist assume you want exact branch knowledge. If that ruins enjoyment, stay in Story Overview until your first ending credits roll.
Tools companion
Printable or on-page checklists live under Tools:
Walkthrough text explains why steps matter; tools track whether you did them.
Patch and version notes
072 Project may adjust flag timing post-launch. Note your Steam build when comparing walkthrough steps to forum posts. Restored content via Official Patch can add scenes that change checklist order — re-read True Ending Checklist after patching.
Related wiki hubs
- Characters — cast motives and route focus
- Map — where to stand for triggers
- Guides — mechanics-first how-tos
- Review — whether to commit time to full completion
Walkthroughs are living documents — start with Story Overview, graduate to checklists when the game fights back.
Frequently Asked Questions
Quick answers to the most common questions.
Which walkthrough page first?
[Story Overview](/walkthrough/story-overview/) for first runs; [Ending Routes](/walkthrough/ending-routes/) for repeat players.
Does walkthrough cover the demo?
Only Day 1 overlaps — see [Demo Day 1](/guides/demo-day-1/).
Where is the true ending list?
[True Ending Checklist](/walkthrough/true-ending-checklist/) with the [Ending Tracker](/tools/ending-tracker/).
Are walkthroughs official?
Fan wiki — verify against your patch version on Steam.