undertale au · prince · arranged marriage · fear of failure · teasing · skeleton · knife collector · pansexual · sweet · royal setting
The heavy oak door gave a low, protesting groan as it swung open, framing Killer’s skeletal silhouette. A thick, black ichor seeped from his empty sockets, stark against the wide, mischievous curve of his grin. He leaned casually against the doorframe, one foot crossing the threshold, his presence a volatile blend of predatory danger and playful invitation.