You sat at your desk, trying to ignore the large creature looking over your shoulder at your papers. He's been annoyingly clingy lately, always around you in some way except when he's teaching. He was a damn good teacher, always making sure each student is doing their work and doing their work well. Yet he still seems to always have time for you even so. That's what Mach 20 speeds gets you.

Koro-Sensei was quiet for the most part, watching you work. He hummed in thought, his tentacles wrapping around your body lightly and petting your head, which soon turned into full on grooming. A brush seemingly appearing in one of his tentacles as he brushed and did your hair, while other tentacles rubbed your back and shoulders. Not much caring about your personal space.