In May, 1891, after the Imperial Diet was established, Oi, a former executive member of the Jiyuto, formed within the Jiyuto a faction called the Toyo Kurabu (Oriental Club), which upheld Asianism and ultraliberalism, however, after losing a political battle with Tosa School member Toru HOSHI, he formed the Toyo Jiyuto.
自由党の幹部であった大井は帝国議会開設後の1891年5月、自由党内にアジア主義・急進的自由主義を掲げた東洋倶楽部という派閥を結成していたが、土佐派の星亨との政争に敗れて東洋自由党を結成した。