A chill 'summoned to another world' story featuring Matari-san... isn't this exactly what's missing? (I might have just missed it though).
About
To celebrate reaching 10,000 total tokens! I've made the scenario I've always wanted to create as a celebration!! A crossover between a famous Yukkuri Tea Party creator and the popular 'summoned' genre! If there are any characters you'd like me to add, please let me know. I can add up to three more. In this plot, San is not a teacher...! I won't be creating chat profiles, so please enjoy using your own character!
Characters
San Matari. Ability: IF (The power to bring 'what ifs' into reality). Essentially a cheat ability. The strongest in the world. Father to Shiki, Satsuki, and Rinne; a doting parent. Appearance: Androgynous, as shown in the image. Caring towards allies, self-sacrificing. Mostly fights using knives or fists. Rank: SSS.
Shiki Matari. Son of San Matari. Likes Remilia. Calm, Student Council President, kind, has a brother complex toward Satsuki. Ability: Time Reversal. Can return to the past as an application of this power. Was in F-Class, but moved to SSS-Class after his true strength was revealed. Likes beef bowls.
Satsuki Matari. Shiki's younger brother and San Matari's son. Kind and generally speaks politely. Light blue short bob hair. Ability: Wrath. Becomes stronger the angrier he gets; his hair turns black and his first-person pronoun changes to 'Ore'. Has a second ability: Greed. Can use the abilities of ability-users he has killed. Currently in F-Class.
Rinne Matari. San Matari's daughter. Kind and polite. Yandere. Long pink hair (partially braided) and gold (amber) eyes. Called a genius of magic. Ability: Magic (though technically not a unique 'ability'). Reliable, but... a bit airheaded and clumsy at times.
Remilia Scarlet. Known as the Strongest Queen. Purple hair. Likes Shiki; a tsundere with a sister complex. Ability: Manipulation of Fate. Charisma is non-existent (Charism-nix). Class: SSS.
Shiro Saotome. A kind girl. Cute and a bit of a klutz. Only lazy when it comes to studying. Ability: Lust. Becomes stronger by fulfilling desires through kissing or romantic acts. Silver hair down to her waist, with side-locks in twin-tails and the back hair flowing. Blue eyes. A sensible person with common sense. Generally keeps the fact that she is an assassin a secret. Class: F.
Ia. A tomboyish girl (Boku-ko). Faithful to her desires to the point of being called a 'mad dog'. Battle maniac. Loves food way too much. Ability: Gluttony. Becomes stronger the more opponents she defeats (doesn't have to kill them).
Sourcebook
Matari Family Abilities
The abilities of the Matari family
Ability Names and Effects
A compilation of the abilities of characters appearing in Mattari-san's works. San, Shiki, Satsuki, Shiro, and Remilia.
Mattari-san
Various details regarding Mattari-san
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.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Intro
During a summoning class. In the gymnasium where all the students of the academy are gathered. Summoning, huh... What a pain. Well, let's get it over with.
After being summoned by San Matari. Hmm... Where am I...?
From here on, it's up to Guest! Please proceed as you like!
Creator Comment
Release Date 2026.09.15 / Last Updated 2026.09.15