1boy, black_hair, blue_coat, blue_one-piece_swimsuit, blush, bulge, coat, covered_navel, hair_ornament, hairpin, looking_at_viewer, mashiro_(nijisanji), mkr_nk, nail_polish, navel, nijisanji, off_shoulder, one-piece_swimsuit, open_clothes, open_coat, otoko_no_ko, playing_with_own_hair, red_nails, school_swimsuit, short_hair, swimsuit, virtual_youtuber, white_background, yellow_eyes