kosmos beta, nakano itsuki, go-toubun no hanayome, commission, highres, pixiv commission, 1girl, :d, ahoge, alternate breast size (larger), arms up, ball, beach, beachball, bikini, blue eyes, breasts, cleavage, embarrassed, gluteal fold, hair ornament, huge breasts, knees together feet apart, long hair, looking at viewer, micro bikini, navel, ocean, open mouth, outdoors, red hair, silver bikini, smile, solo, star (symbol), star hair ornament, swimsuit, wavy mouth