Rule 34 Dev - 1boy 1girl awa black_hair blush closed_eyes clothed_sex fins fish_tail grabbing_another's_breast green_hair green_tail groping hetero jewelry long_hair mermaid monster monster_girl mukoujima_takurou muromi-san namiuchigiwa_no_muromi-san necklace red_eyes scales seashell sex shell tail twintails two_side_up underwater|4133964159