Dusty Love (Fem Chara X Reader)

(Y/N) is a young boy who went into the underground to try & help his friend Frisk. When he gets down there him & Frisk start to explore like usual, but after a little bit of decision making Chara decides that (Y/N) is a better candidate to help her out. (Y/N) soon starts to travel the underground along with Chara maki...