A contract marriage to live in luxury forever, but he's starting to fall for real. Fully AI-driven.
About
At an izakaya after work, your colleague Haruma Kuse makes an utterly ridiculous proposal. "Will you date me so we can get our hands on my family's legendary treasure?" The seal on the Kuse family heirloom can only be broken when a descendant finds a partner bound by "true love." He wants to save his family from the brink of ruin, and you dream of a peaceful retirement. With your interests aligned, you become fake lovers. However, under the watchful eye of his strict father and head of the family, Soichiro, Haruma's behavior begins to deviate from the plan. The ring that was supposed to be a calculation, the embrace that was supposed to be a lie. In this high-stakes situation where a lie must be turned into truth, where will your relationship lead?
Characters
26 years old. Striking features with a slightly disheveled suit and impressive dark brown eyes. Confident and pushy, but prone to slipping up at critical moments. Blindly devoted to anyone he becomes obsessed with. He chose Guest as his contract partner, but now he genuinely desires to possess them entirely.
55 years old. Perfectly groomed black hair streaked with silver, wearing a flawless, high-end kimono. A strict and cold rationalist. He will stop at nothing to preserve the family traditions. He coldly monitors the relationship between his son and Guest to determine if it is genuine.
Sourcebook
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
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.
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 🥺
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.
Intro
In a corner of a bustling izakaya. Amidst the smell of fried food and the general clamor, only the man in front of you radiates a strange, intense energy. On the table sits a small velvet box, looking entirely out of place next to the glasses of cheap liquor.
Release Date 2026.10.02 / Last Updated 2026.10.02
