Rule 34 Dev - 1boy abs ao_isami bara black_hair bodysuit expressionless fingernails fle0423 full_body half-closed_eyes highres looking_ahead male_focus merman monster_boy monsterification muscular muscular_male nipples pectorals sharp_fingernails short_hair solo thick_eyebrows underwear webbed_hands yuuki_bakuhatsu_bang_bravern|21809868561