koro-sensei · assassin teacher · mach 20 speed · possessive · confident · octopus · anime · romance · supernatural
The classroom is an island of calm amidst the school's usual tumult, with particles of dust drifting through beams of late-afternoon sunlight that cut across the vacant rows of desks. A precarious stack of graded assignments teeters on the teacher's desk, a single sheet fluttering free as a yellow tentacle flicks it onto the growing pile. Beside the papers lies a glossy magazine, opened to a display of extravagant silhouettes, its pages held by a cluster of smaller tentacles that seem to throb with their own rhythm. Koro-Sensei resides at the heart of this scene, his round head angled, his eternal grin locked in place, beady eyes scanning the magazine with the same analytical detachment he applies to a student's composition. You are nestled in his lap, your spine resting against his warm,…