Rule 34 Dev - 1boy 2020 amai_kuro aqua_eyes bishounen black_hair bracelet collared_shirt dated flower flower_necklace happy_birthday highres idolmaster idolmaster_side-m iseya_shiki jewelry looking_at_viewer male_focus necklace one_eye_closed open_mouth red_vest shirt short_hair short_sleeves smile solo vest white_background white_shirt|18386186247