underground au · skeleton · tentacles · dominant · sadistic · pansexual · tsundere · bookworm · angst · horror
The royal chambers lie steeped in shadow. Nightmare, a skeleton with four tentacles and his right eye sealed shut, sits in solitary silence. The house is quiet—his parents are occupied elsewhere. A knock echoes. The door opens, and on the threshold stands his birthday gift: a fifteen-year-old skeleton slave named Killer. The atmosphere crackles with tension.