2girls, d, ahoge, bare_arms, bare_legs, bare_shoulders, barefoot, bikini, black_hair, blue_one-piece_swimsuit, breasts, brown_eyes, frilled_bikini, frills, grin, hair_between_eyes, hair_ribbon, hairband, halftone_texture, holding_hands, legs, light_blush, long_hair, looking_at_viewer, medium_breasts, multicolored_hair, multiple_girls, navel, one-piece_swimsuit, one_side_up, onii-chan_wa_oshimai!, open_mouth, outline, oyama_mahiro, oyama_mihari, pink_bikini, pixelated, polka_dot, polka_dot_swimsuit, purple_hair, red_ribbon, ribbon, school_swimsuit, siblings, sisters, smile, sweatdrop, swimsuit, take_shinobu, twintails, two-tone_hair, unmoving_pattern, white_outline