2boys, aki_ma_jiro, aoi_kyosuke, aoi_yusuke, blue_sky, bracelet, brothers, character_name, cloud, collared_shirt, cup, fingernails, food, from_behind, glasses, hair_between_eyes, hat, holding, holding_cup, ice_cream, idolmaster, idolmaster_side-m, jewelry, looking_at_viewer, male_focus, multiple_boys, navel, necklace, ocean, open_clothes, open_shirt, orange_eyes, orange_hair, shirt, short_sleeves, siblings, sky, topless_male, twins, utensil_in_mouth