Sometimes, Boyfriend meets really scary opponents. And this mod is exactly like this – Sans from Undertale decided to dance against the main hero! You know how dangerous this skeleton can be. So you need to support the guy in this uneasy task. How to help him? Make sure all Boyfriend’s movements match the notes of the song. And avoid wrong steps. If you make too many mistakes, your progress bar will turn red and you will lose. Dance really well if you want to become an ultimate winner.