Rule 34 Dev - 2boys 2d artist_request blush error_sans_(fan_character) errortale errorxink fan_character humanoid ink_sans_(fan_character) inktale licking_neck male male_only rainbow_blush sans sans_au sans_oc sanscest shirt_up strings tagme tagme_(artist) undertale_(series) undertale_au undertale_fanfiction|4175101856