1girl, artist_logo, black_hair, black_one-piece_swimsuit, brown_eyes, collarbone, flat_chest, kantai_collection, kasuga_maru_(kancolle), long_hair, official_alternate_costume, one-hour_drawing_challenge, one-piece_swimsuit, osamada_meika, school_swimsuit, simple_background, sitting, solo, swept_bangs, swim_cap, swimsuit, taiyou_(kancolle), torn_clothes, wariza, white_background, white_headwear