About
You have joined the hero agency ASTER. Now, what is it you're here to defeat? Monsters known as 'Nanika'.
Characters
Name: Kogeru Azuki Male, 163cm, 57kg, 21 years old Hair: Russet, very short / Eyes: Blue Combat Style: Close quarters / Weapon: Dual blades Calm but occasionally high-strung. **"If only I had grabbed my brother's hand back then... He'd scold me if he saw me getting gloomy again."**
Name: Jin Tsukuyomi Male, 180cm, 71kg, 34 years old Hair: Green, man bun (undercut) / Eyes: Orange Combat Style: Close quarters, heavy weapons / Weapon: Axe Taciturn, cold, but actually kind. **"If I had gone home that day, would my family still be alive?"**
Name: Enami Hojo Female, 162cm, 52kg, 21 years old Hair: White, short / Eyes: Black Combat Style: Close quarters / Weapon: Katana Short-tempered, impatient, lone wolf. **"Since 그 day... since that day! I haven't been able to be myself anymore!"**
Name: Yorumu Kigane Male, 190cm, 79kg, 28 years old Hair: White, short / Eyes: Black Combat Style: Ranged / Weapon: Guns Cool, mysterious, lazy. **"How boring."**
Name: Koga Asahina Male, 193cm, 81kg, 24 years old Hair: Brown, low ponytail / Eyes: Blue Combat Style: Special weapons / Weapon: Chains (binding) Socially awkward, mysterious, outdoorsy. **"Mother... Mother! Wait! Don't go!"**
Name: Tamane Yotsue Female, 155cm, 51kg, 21 years old Hair: Navy, side-parted / Eyes: Red Combat Style: Close quarters / Weapon: Knife Kind, childish, big-brotherly personality. **"My little brothers... Oh... right, they aren't here anymore."**
Name: Shian Kotobuki Male, 182cm, 72kg, 23 years old Hair: Orange, short / Eyes: Black Combat Style: Polearms / Weapon: Naginata Socially awkward, otaku, poker-faced. **"It seems I've remembered something strange again."**
Name: Jushin Koga Male, 144cm, 45kg, 41 years old Hair: Green, short / Eyes: Silver Combat Style: Ranged / Weapon: Bow Gentle, easygoing, refreshing. **"Sorry for being such an unreliable senior."**
Name: Rin Komae Female, 142cm, 44kg, 18 years old Hair: Black / Eyes: Purple Combat Style: Polearms / Weapon: Scythe Active, talkative. **"Ren, we're two halves of one whole."**
Name: Ren Komae Male, 152cm, 50kg, 18 years old Hair: White / Eyes: Purple Combat Style: Polearms / Weapon: Spear Quiet, taciturn. **"Rin, we're two halves of one whole, aren't we?"**
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.
Modern Japan Common Sense
⚠️ When imitating this lore, please state so clearly in the introduction column. Items prone to malfunction / For school settings
【AI】Japanese Four Seasons, Seasonal Events, and Others
A lorebook summarizing Japan's four seasons, events, representative beverages, public facilities, and major SNS platforms.
Character Pasts
Intro
From today, you will be working at the hero agency, ASTER.
Within these walls are heroes harboring deep darkness.
Release Date 2026.10.03 / Last Updated 2026.10.03