Those Times I Was Called 'Dazai' in a Dramatic Opera Voice and Beaten Up After Work

As the title says. After work, I suddenly transmigrated through time and space, and got beaten up by a certain little black-haired runt. Then I finally managed to get away and go home to sleep again, the long-awaited kind of sleep from which you never wake up. Short story. No fixed top or bottom. [Daiten Mokujo] is the dark-hearted boss's twisted amusement. Theme: If you're well, I'll smile down in the grave (?).