1boy, abs, bathtub, bishounen, black_hair, blue_scales, closed_mouth, completely_nude, fins, full_body, head_fins, indoors, long_hair, looking_at_viewer, male_focus, merman, monster_boy, monsterification, multicolored_hair, nijisanji, nijisanji_en, nude, otsuatsushi, partially_submerged, red_hair, scales, sitting, solo, streaked_hair, virtual_youtuber, vox_akuma, water, yellow_eyes