2girls, ahoge, air_bubble, aqua_eyes, aqua_hair, bare_legs, bare_shoulders, barefoot, bikini, blue_theme, blush, breasts, bubble, clenched_hand, closed_mouth, collarbone, dot_nose, eyelashes, fish, floating, floating_hair, hair_between_eyes, hair_ornament, hair_ribbon, hip_bones, long_hair, looking_at_viewer, maou_gakuin_no_futekigousha, medium_breasts, misha_necron, multiple_girls, navel, one_eye_closed, open_hands, ribbon, sasha_necron, shawl, shizuma_yoshinori, short_hair, siblings, side-tie_bikini_bottom, sidelocks, sisters, smile, sunlight, swimming, swimsuit, teeth, twins, twintails, underwater, water, wrist_ribbon