1girl, 2022, d, bikini, blue_eyes, blue_sky, breasts, cleavage, dated, day, hair_between_eyes, happy_birthday, higurashi_no_naku_koro_ni, leaning_forward, looking_at_viewer, medium_breasts, mimasato, ocean, open_mouth, outdoors, ryuuguu_rena, sky, smile, solo, splashing, summer, swimsuit, wading, white_bikini