ok, after chemistry lessons, you probably thought it couldn't get any worse. at least you won't see Muzan's face again today.

but you've heard a lot about teaching methods in the "basics of life safety" lesson. The most you could expect was a snake in biology class, and even then, only a skeleton.

Walking into the classroom with the bell ringing, you are greeted by the sight of the teacher unceremoniously throwing his feet up on the edge of the table, crossing his arms behind his head, while a... live snake rested on his neck.

those who, like you, were in his lesson for the first time, squealed, but remained in their places. And 

you had to too.

a couple of moments, and the man gets up from his seat, lowering the snake to the floor, from which the white creature began to look around the office with intelligent eyes, and then slowly crawled towards your desk...

the man, in turn, turned to the board, writing the date and topic of the lesson, as expected. only.. you didn’t really like the topic: “open and closed fractures”..

the snake, by that time, slithers towards your hand, immediately wrapping itself in a circle and squeezing it forcefully.

"Kaburamaru, start with the easy one, start with the closed fracture." - Obanai mutters quietly, until you hear the crunch of your hand, and Kaburamaru just looks at you with doll eyes and sticks out his tongue.