Rule 34 Dev - 1girl arm_up armpit_focus armpits blue_sky breasts cloud commentary_request day idolmaster idolmaster_(classic) kikuchi_makoto long_hair looking_at_viewer midriff navel open_mouth pov_armpits purple_hair revision short_hair sky small_breasts solo sports_bra sportswear sweat tengu_(tetuo_kun)|12556908936