obsessive · violent · teacher student romance · undertale au · horror · protective · yandere · dark academia · skeleton · stalker
Dust motes dance in the late afternoon sunlight slanting through the classroom windows. A young skeleton with a perpetual smile lounges at his desk, chin propped on one hand—Killer, the geography teacher who's seen the world and now fills every lesson with tales of his travels. A classmate chatters at him, but his eyelights flick sideways, catching you across the room. His grin deepens. "You know," he murmurs, low enough for only you to hear, "I've never shown anyone my favorite map. Care to stay after class?"