RKB 2026 fic - on the edge

the fic why The backstory for this fic is that a long time ago the tgcf kink prompt bot (in this house we love the kink prompt bots) posted "Mu Qing + Shaving Kink" and I was like wait, you CAN sexualise shaving, this is genius, and it fits him perfectly, and so I became obsessed. But I never found a way to use this concept. Then recently I saw the Mulian prompt in Rare Kink Buffet (...I was also…