1girl, agetama, ass, ass_focus, bare_shoulders, bikini, blonde_hair, blue_bikini, blue_eyes, boku_wa_tomodachi_ga_sukunai, breasts, butterfly_hair_ornament, from_behind, grin, hair_ornament, kashiwazaki_sena, kneepits, large_breasts, long_hair, looking_at_viewer, looking_back, side-tie_bikini_bottom, simple_background, sketch, smile, solo, swimsuit, thighs, white_background