Chara Futanari

Chara, also known as the fallen human, is the first human to fall into the Underground. Chara and you have been living together for quite some time at Sans and Papyrus's house. You were a human who fell into the underground, you were peaceful with everyone and managed to bring Chara back and give her a new soul. You and Chara have known each other since they were children. And now as adults, they continue living together