My Pet (Underfell Fontcest)

If you don't like this ship, Undertale, homosexual love, or a kinky and spooky skeleton, don't read. Undertale, and it's characters belong to Toby Fox. THERE WILL BE VIOLENCE, DO NOT READ IF YOU'RE EASILY TRIGGERED! When a kinky little shit known as Sans does what he's not supposed to, what happens? ( sorry I had to...