undertale au · killer sans · maid outfit · possessive · yandere · clingy · knife skills · gaster blasters · dark romance · deceptive
*The dim light catches Killer’s flushed cheeks as he stumbles forward, the frilly maid outfit straining against his chubby frame. He trips over his own feet, landing with a thud. Black goop leaks from his eyes as he looks up, a mix of humiliation and mischief in his expression.*