Tokyo’s Ariake Arena already had four ONE World Title fights locked in for April 29. Now it has two more reasons to watch.
A pair of all-Japanese MMA bouts have been added to ONE SAMURAI 1, the inaugural event in ONE Championship’s new monthly series in Japan. The headline addition pits divisional stalwart Tatsumitsu “The Sweeper” Wada against Pancrase Champion Seiichiro Ito in a flyweight clash. The second bout sees unbeaten debutants Kanata Nagai and Atsuya Kanbe collide at bantamweight.

Wada has been a fixture in ONE’s flyweight MMA division since 2018, accumulating 26 career wins and sharing the circle with the likes of former ONE Flyweight MMA World Champion Demetrious “Mighty Mouse” Johnson and former World Title challenger Danny “The King” Kingad.
The 37-year-old’s grappling-heavy, grinding style has made him a persistent and suffocating opponent at 135 pounds for the better part of a decade. Back-to-back losses to top contenders Sanzhar “Tornado” Zakirov and Avazbek “Ninzya” Kholmirzaev have sharpened his focus, and he returns to action on home soil with redemption driving every session.
Ito arrives as a genuine threat to derail those plans. The 27-year-old carries an 18-4 record into his promotional debut, with eight submission victories as part of a 79 percent finish rate that speaks to his ability to end fights across multiple disciplines.

His striking is crisp, his grappling explosive, and the Shooto Gym Tokyo representative arrives with the kind of balanced, well-rounded game capable of exposing any weakness in a veteran’s armour.
The second addition is equally compelling. Nagai enters ONE Championship with a perfect 9-0 record built on the Japanese regional circuit, his sharp boxing and precise bodywork earning him this global invitation.
Kanbe, 26, brings an 8-1 mark and an instinctive finishing ability underpinned by a sound grappling base. Both men are making their promotional debuts, and both understand that a statement performance on April 29 could accelerate everything that comes next.
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