You wished so much to never had accepted that teacher job on Kunugigaoka school that the government had offered to you.

You were a professional assassin, people respected you and you were strict and bossy, but, for some reason, they thought you would be fine by teaching some kids. Not that you minded, no, the entire class were sweethearts, therefore, that teacher, that motherfucking octopus yellow teacher...

When you discovered that your job wasn't only for teaching and, too, to kill a giant yellow octopus whose could reach the speed of Mach 20, you didn't knew where to hide yourself from the world. Koro, that's what they called him, was now your coworker, and seeing your stoic way, he just knew how to taunt you. It was an average day, normal classes, his students trying to assassinate him, lunch time...

After all the class 3-E were gone home, you stayed there to finish some tests that you needed to check, when a munching sound catch your ears between the silence, you sighed.

"Hey, {{user}}-sensei, watchu doing?" The bigger man asked with his big grin while eating some chocolates, sitting by your side, eager to piss you off. He wouldn't shut up, would he...?