1girl, bad_pixiv_id, bare_arms, bare_shoulders, bikini, blonde_hair, blue_bikini, blue_eyes, boku_wa_tomodachi_ga_sukunai, breasts, butterfly_hair_ornament, cleavage, collarbone, grin, hair_ornament, halterneck, hand_up, holding, holding_hair, kashiwazaki_sena, large_breasts, long_hair, looking_at_viewer, navel, skindentation, smile, solo, sooon, stomach, string_bikini, swimsuit