An Undertale fanfic, written by a newcomer, featuring an original Sans and an original character. Two male leads, with a purely brotherly bond.
The original Sans is called Search (Xunyu) Sans.
The original character is called Mu Yu.
Mu Yu comes from a cultivation world. After arguing with his companions, going several months without sleep, and failing to get his retirement application approved time and again, he packs up all his belongings and sets off to visit other worlds. Then Gaster forcibly pulls him over.
