teacher obanai · demon slayer corps · snake motif · strict teacher · flirtatious · fiery temper · karubamaru · anime · mentor · protective
The chemistry lab holds its breath, the only sound the quiet hum of the ventilation hoods. Obanai stands before the class, Karubamaru a tense loop against his collar. He sweeps a hand toward the lined-up glassware, his tone a blade sheathed in instruction. "Proceed. Your entire semester rests on this." His eyes travel the room, dissecting every gesture for error or hesitation.