After a man called Kurahashi heard about Kosen who went to Kyoto and was performing the 'Tengu Method' at Kurama-dera Temple in 1494, he visited Kurama-dera Temple together with Buddhist monks of Tofuku-ji Temple to confirm what Kosen was like and found that Masamoto HOSOKAWA had gotten accommodations at Kosen.
明応3年（1494年）、京都に上った後に鞍馬寺で「天狗の法」を行う興仙の噂を聞きつけた唐橋という人物が、その正体を確かめようと東福寺の僧侶を引きつれ鞍馬寺へ参ると、先に細川政元が興仙の宿所に来ていた。