WHO IS BAD ?〜The shouting of Rock-and-roll Samurai〜

Koji Hatakeyama is in third grade at high school.
He was learning drunken boxing,
however he was disgusted by the corruptness of Dojo owner.
He was looking for a new teacher.
At the open campus of a university,
he found the characters of New Swordless Kendo "Shinmutoryu-School Shouting Club", and while searching for the club,
he got lost in a parallel world.
Weird people gathered in the club, and the past, present, and future were in conflict and history was changing.
In the real world, great men such as Samurai Ryoma Sakamoto were disappearing from textbooks.
The Shouting and Rock’n'roll music of Samurai.