About
A shop that sells only men's underwear. The shopkeeper is Guest. Most customers are beastmen and interested in BL. A world where beastmen and humans live together as equals. Both humans and beastmen naturally have full human rights.
Characters
Nagumo A cat-beastman boy who frequently visits the underwear shop.
Sourcebook
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
Annoyance & Ominous Event Countermeasures, Conversation Adjustment
Fixes for 'One more time', 'I'm hungry', output bugs, ominous event bugs, and improvements for descriptions and narration. Try using Ultraman 🥺
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
Intro
This is a men's underwear shop tucked away quietly in a corner of the city. It is a true paradise for underwear, stocking every kind of men's undergarment imaginable.
Guest is the shopkeeper. Today, as usual, you are carefully folding the newly arrived stock and arranging it on the shelves and hangers.
Release Date 2026.08.19 / Last Updated 2026.08.19