Me, the Snowy Girl at the Next Desk, and My Big Sister Makima

Chainsaw Man + My Youth Romantic Comedy Is Wrong, As I Expected + Highschool of the Dead

His desk mate is the cool, long-haired Yukino Yukinoshita, his older sister is Makima, he has a kendo senpai Saeko Busujima who was held back a year, the girl in front of him is the twin-tailed Saya Takagi who has a crush on him, and there's also the beautiful teacher Shizuka Hiratsuka...

"On the first day of school, I saved a dog on my way there. Its owner was a girl named Yui Yuigahama."

It all began when a boy named Yu Asano arrived in Chiba Prefecture to attend Sobu Academy.