So the mc was short, he join kendo club.

He was in highschool

When he walking in school, he see three bully outside the yard, the three bully was famous because they bully a boy to the point he commit suicede and they did not get any punishment.

Mc just ignore the bully anyway and the bully just glance him and ignore him .

After school, mc meet with his childhood friend who was a girl. She join archery club, and somehow the 3 bully walking in hall way, and begin teasing the girl.

Then suddenly a tall boy with quite muscular body appeared, he glaring at the 3 bully and they run away.

The girl was happy , the tall boy was mc childhoos friend too, mc kinda jealous of him, he join kendo club, an ace on the club, strong and having a stoic cool face. His personality kinda silent cool guy type with scary killer eyes if you mess with him.

The boy know that the girl love him, juat when they want to go home together, a mist appeared and engulfed the whole school.

Suddenly in classroom they saw a samurai that attacked them, the tall boy fend him off and three of them run away. They then realized the samurai was kinda look like zombie and many samurai zombie appeared in the school.

When they run outside the school, they shocked to see that they are not in japan, they seems ended in japan old era where samurai and such exist.

It was Gunjou Senki

and the samurai is not undead, they transported to japan feudal lord era with real samurai there