Inspired By My Favourite AU, Flowerfell. Over a few hundred RESETS later, one of the RESETS had gone wrong and had Undertale Sans appear in Underfell. However, everytime Underfell Frisk RESETS from dying, a flower appears on Undertale Sans. Undertale Sans then meets Underfell Sans, who at first wanted to kill him, but then realises the flowers that appeared everytime Frisk RESETS. He spares him, and took care of him. As time goes on, he fells in love with him. But, he knows that Undertale Sans can't live for long...

This contain lemons and puns~ May have some harm actions. Warning given. #Blueberrysans#Classicsans#Love#Lemon#Classicberry.