Rule 34 Dev - 2018 2boys 2d blushing error_sans error_sans_(fan_character) errortale flustered humanoid ink_sans ink_sans_(fan_character) inktale licking_neck male male_only pink_blush pink_eyes sans sans_au sanscest selfcest tagme text thegreatrouge twitching undertale_(series) undertale_au undertale_fanfiction|3131596608