Nakagawa Breaks Silence After Online Allegations
Shinnosuke Nakagawa (仲川慎之介), the vocalist and guitarist of rock band Jisoku 36km (時速36km), posted a statement on his personal X account on June 9 addressing infidelity rumors that had been circulating on gossip-focused social media accounts. The band is best known internationally for performing "Sono Mirai," the 23rd ending theme for the One Piece anime, which has accompanied the series' Elbaf arc since Episode 1157 in April 2026.
In the statement, addressed "to everyone who supports Jisoku 36km," Nakagawa apologized for the concern caused by social media posts about him. He explained that while the band had previously promised an official statement through its official account, "circumstances" prevented that from happening. A prior explanation he gave during a livestream could not be reposted on the band's official channels either.
As a result, the statement was issued from individual band members' personal accounts instead.
Full Band Backs Denial
The denial was unambiguous. "There is absolutely no truth to the claim that Shinnosuke Nakagawa committed adultery or infidelity," the Sponichi Annex report quotes from the document. All four members of Jisoku 36km, which also includes bassist Ogino Tetsu, drummer Matsumoto Hideaki, and guitarist Ishii Kai, endorsed the denial.
The statement added that certain details were being withheld out of consideration for parties involved. It also warned that if "claims that differ from the facts" or posts "that damage our reputation" continue, the band would consider further action based on materials and evidence it has on record.
About Jisoku 36km and 'Sono Mirai'
Jisoku 36km is a four-member rock band that gained wider attention after "Sono Mirai" was selected as the One Piece ending theme for the Elbaf arc. The digital single, released April 13, 2026, marked their highest-profile placement to date. The band's name translates roughly to "36 km/h" and they operate under the English-language handle @36km_per_hour.
The infidelity allegations originated from so-called "exposure" accounts on social media, a type of anonymous gossip channel that has become a recurring source of entertainment-industry controversy in Japan. No mainstream outlet has independently corroborated the allegations.
Looking Ahead
One Piece continues its Elbaf arc broadcast in Japan, and "Sono Mirai" remains the current ending theme. Crunchyroll simulcasts One Piece episodes for international audiences. The band has not announced any schedule changes as of this writing.