1girl, d, aicedrop, armpits, arms_behind_head, arms_up, bad_twitter_id, ball, beachball, bikini, blush, collarbone, day, doki_doki_literature_club, frilled_bikini, frills, hair_ornament, hairclip, heart, holding, holding_ball, holding_beachball, looking_at_viewer, natsuki_(doki_doki_literature_club), open_mouth, outdoors, pink_bikini, pink_eyes, pink_hair, short_hair, signature, smile, solo, sparkle, sunlight, swept_bangs, swimsuit, two_side_up, upper_body, water