1girl, akitsu_maru_(kancolle), akitsu_maru_kai_(kancolle), black_hair, blush, brown_eyes, dangan_kurabu, finger_to_mouth, hat, index_finger_raised, kantai_collection, looking_at_viewer, military, military_uniform, one-hour_drawing_challenge, peaked_cap, short_hair, simple_background, smile, solo, uniform, upper_body, white_background