Umbryel
---
When Kiryu unexpectedly brings to Furin a tiny black‑and‑white kitten he names Sakura, he assumes the creature will be quiet, obedient, and easy to ignore.
He is wrong.
Sakura is a menace.
A cute menace, but a menace nonetheless.
Within days, the entire Furin delinquent ecosystem collapses into chaos as every boy - from Umemiya to the twins to Kaji - becomes obsessed with the kitten.
Sakura, meanwhile, acts like a tiny emperor who owns the school, the dorms, and Kiryu's hoodie.
As the boys compete for Sakura's affection, the kitten becomes the center of their daily lives, their arguments, and their pride.
Furin has survived gangs, rival schools, and brutal fights...
But can they survive one small cat?
---