Cut First, Complain Later ( Dandadan x malereader )

Y/N is a chill, sword-wielding exorcist trained by none other than Seiko Ayase herself.
He doesn't scream. He doesn't panic. He doesn't even run. He just shows up, cuts the problem in half, and leaves with a sigh.

When aliens and yokai start getting bolder, Seiko sends him to "keep an eye" on her granddaughter Momo and the weird kid with turbo legs.

Now he's stuck with a loud high schooler, a cursed pervert, and a ghost in a tracksuit.

...And somehow, that's not even the weird part.

Swords fly, ghosts cry, and Y/N just wants to nap.