1boy, 1girl, accidental_exposure, asahi_(asahi8105), blush, breasts, brother_and_sister, brown_hair, feet_out_of_frame, floating_hat, hat, hetero, holding_hands, idolmaster, idolmaster_million_live!, kindergarten_uniform, kitazawa_riku, kitazawa_shiho, long_hair, looking_down, medium_breasts, panties, pantyshot, school_hat, shirt, siblings, striped, striped_shirt, underwear, upskirt, wide-eyed, wind, wind_lift