1boy, 1girl, black_hair, blue_background, blue_jacket, breasts, brother_and_sister, cellphone, closed_mouth, eye_contact, glasses, hand_on_another's_arm, holding, holding_hands, holding_phone, jacket, large_breasts, long_hair, long_sleeves, looking_at_another, minakata_hizuru, minakata_ryuunosuke, parted_lips, phone, shirt, short_hair, short_sleeves, siblings, simple_background, smile, summertime_render, twins, upper_body, upside-down, white_shirt, woshifeixue