Rule 34 Dev - 1boy bad_id bad_pixiv_id birdy_cephon_altera birdy_cephon_altera_(cosplay) blue_leotard blush brown_hair bulge cosplay crossdressing hourou_musuko kneeling leotard male_focus nitori_shuuichi otoko_no_ko sawa_jaaji short_hair solo tetsuwan_birdy thighhighs|358367576