Fuurinji, Hayato

風林寺隼人

Hayato is Miu's grandfather and the undefeated elder of the Ryōzanpaku Dojo, reputed to have beaten 500 Shaolin masters to near death. He is also known as the "Invincible Super Man". His kicks possess speeds that remain a blur even when viewing a replay at 1/1000 of normal speed. If necessary, he can intimidate other masters to maintain peace. Using merely 0.0002% of his power, he can easily overwhelm both Kenichi and Miu simultaneously and rip a tree in half. He defeated a master-level opponent in the D of D tournament with just one finger. Before building the dojo, he and his granddaughter traveled the world in his quest for peace. He currently possesses 108 special techniques and can copy any move an opponent uses against him, such as Kenichi's "Saikyou (Strongest) Combo" and "Saikyou Combo 2," Soutenshu, and Miu's "Hyōi Kazekirihane." He knows Seikūken and created "Ryūsui (flowing water) Seikūken," which Kenichi learned from him. However, his most frequently used technique appears to be the "Human Shuriken."
One move shown in the manga is "the Shockwave of Forgetfulness," which erases one's memory. He seems able to determine the extent of the memory loss; in a flashback involving Apachai, the thug leader experienced total amnesia, while Kenichi only lost his short-term memory.
His training methods are the most frightening among all the masters at Ryōzanpaku. Bad omens, such as splitting tea bowls, pots, and chopsticks, were common at Ryōzanpaku while Kenichi trained with him in the mountains. Hayato is rather fond of Kenichi, calling him "Ken-chan," and is the only master who apologizes to Kenichi for the hellish training he and the other masters inflicted. He later comments that Kenichi reminds him of his younger self. Although Hayato appears to have unmatchable power, Miu tells Kenichi that he previously had trouble fighting Silcardo Jenazard. He and Kushinada know each other from the past.
Despite being the eldest and most powerful member of the dojo, Hayato has proven to be rather irresponsible at times. He tends to recklessly spend the dojo's money on personal items and gets carried away whenever he has an opportunity to showcase his strength. He is sometimes seen eating candy, especially lollipops. He also mentions that he is getting weaker. After using 0.0002% of his power against Miu and Kenichi, he told them he needed rest. In Battle 231, he uses a bi-vocal skill that allows him to speak with two voices. He once used it for a duet at a karaoke bar. Hayato can also use the left and right sides of his body to perform separate actions and movements. In Battle 233, he is shown capable of reducing his voice to a degree where only one individual can hear it. With these abilities, many, if not everyone, believe he is not human.