Hiiii! just commenting to let you know that even after your response, profiting off of this game is still illegal even if the art is custom made. you still closely and directly based the game off of existing copyrighted content and still use:
-undertale fight system/mechanics
-undertale font
-undertale title screen/intro/menu
-slightly changed undertale human model
-remixes of cpyrighted songs (cannot profit off covers unless given the rights by the creator)
-undertale sound bits
-etc
just make the game free before somene sues you.