Hà Âzà Âin Zeneibà  Inshun (å®Âèµé¢ 禠æ ÂæÂ¿è¤èÂÂ, 1589 to February 5, 1648) was a monk and a martial artist who lived in the early Edo period. He was an Inju (the chief of a temple) of Hozoin Temple, which was a branch temple of Kà Âfuku-ji temple in Nara Prefecture. He was accomplished at the Hà Âzà Âin-ryà « sà Âjutsu School of spearmanship, which was founded by Hà Âzà Âin In'ei and features the use of a Jumonji kama-yari (a cross-shaped spear with a sickle on both sides of the blade)
Inshun was a descendant of a (country samurai) in Yamashiro Province. He was In'ei's nephew and entered the Hà Âzà Âin in 1602 when In'ei was already an old man of 81 years. Inshun was not trained in Hà Âzà Âin-ryà « sà Âjutsu by In'ei but instructed by an old monk from the Okuzà Âin (a monastery in the neighborhood of the Hà Âzà Âin temple), who had been Inei's direct disciple. One year prior to his death (in 1607) In'ei forbade sà Âjutsu training. This should have led to the extinction of at least the monastery line of the school. However, after In'ei's death, Inshun restarted his trainings and lifted the order. Inshun formed foundations for the prosperity of Hà Âzà Âin-ryà « in the Edo period. He established Urajuippon (è£ÂÃ¥ÂÂä¸ÂæÂ¬å¼Âç®, eleven "back" techniques of the Hà Âzà Âin's spearmanship). Those è£Â/"ura"/"back" techniques are contrasted with earlier fifteen 表/"omote"/"front" techniques, allegedly invented by In'ei himself. However, it is not certain if In'ei had written them down or if it was Inshun who arranged all the teachings. Inshun gathered talented disciples who motivated each other in growth and pursuit of the Hà Âzà Âin-ryà «. Amongst them were Nakagawa Hannyà «, Shibata Kaemon, Takada Matabee, Hasegawa Kuranosuke, Isono Shume and Tanaka Kanbee who were called the six Tengus. Hà Âzà Âin Kakushunbà  Insei was Inshun's successor in the monasterial line of the school (the Hà Âzà Âin-ryà « taught nowadays comes from the secular line of Takada Matabee). The graveyard where Inei, Inshun, and their successors are resting is located in the Byakugà Âji quarter of Nara. The members of modern Hà Âzà Âin-ryà « are visiting and maintaining the graves.
In Japanese folklore, he (and Hà Âzà Âin-ryà « school itself) is known the most for a legendary duel with Miyamoto Musashi, who came to Kà Âfuku-ji to fight with a member of the school. This portrayal of Inshun as Musashi's rival and of the duel appears in many modern popular media, such as the manga Vagabond, or games like Ryà « ga Gotoku Kenzan!, and originate in Eiji Yoshikawa's novel Musashi. However, when historical Musashi visited Kofuku-Ji, Inei was 84 years old and Inshun 16. Whether due to the old age of the first headmaster of the Hà Âzà Âin-ryà « or due to the youth of his successor the man who met Musashis challenge was Okuzà Âin Dà Âei. Later on in his life Musashi dueled (and won) with another Hà Âzà Âinryà « user, Takada Matabee. That took place in Kokura in Buzen Province in 1632.