Rule 34 Dev - 2d blush cross_sans cross_sans_(fan_character) cum cum_inside dreamtale dreamtale_(undertale_fanfiction) dreamtale_au heki_(artist) humanoid killer_sans killertale male nightmare_sans nightmare_sans_(fan_character) penetration sans sans_au sans_oc sanscest sex tagme undertale_(series) undertale_au underverse xtale|5307374728