1girl, absurdly_long_hair, azur_lane, breasts, casual_one-piece_swimsuit, competition_swimsuit, grey_hair, lifeguard, lifeguard_chair, long_hair, low-braided_long_hair, mole_on_body, official_alternate_costume, one-piece_swimsuit, one_eye_closed, pool, poolside, prinz_heinrich_(azur_lane), prinz_heinrich_(rabbit_on_watch)_(azur_lane), red_eyes, red_headwear, red_one-piece_swimsuit, solo, swimsuit, tonchinkan, very_long_hair, water, whistle, whistle_around_neck