Nadaka vs Songchainoi Set for ONE SAMURAI 1: Atomweight Muay Thai Title Fight Confirmed

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Reigning ONE Atomweight Muay Thai World Champion Nadaka will defend his crown against Thai challenger Songchainoi Kiatsongrit at ONE SAMURAI 1 on April 29 at Tokyo's Ariake Arena, as ONE Championship announced four additional bouts for the card.

The 25-year-old carries a 4-0 ONE record as part of his 66-6 career striking record. Nadaka made his ONE debut in 2025, rattling off three consecutive victories to earn a shot at the inaugural ONE Atomweight Muay Thai World Title at ONE 173 last year.

The coronation came in front of his home crowd as Nadaka outclassed Numsurin Chor Ketwina to capture gold. Despite his youth, he has already conquered every major accolade, including the Rajadamnern Stadium, Lumpinee Stadium, WMC, and WBC Muay Thai World Titles.

His striking and superior fight IQ have made him one of the sport's most technically gifted champions. Now he faces Songchainoi, a 25-year-old Thai challenger from Kiatsongrit Muay Thai Gym who brings a 60-18 striking record and 10-1 ONE record.

The challenger earned his six-figure contract after five straight victories following his 2023 ONE debut. Songchainoi once rode a nine-fight winning streak and is coming off a dominant victory, proving he belongs among atomweight's elite.

Also added to the card, 21-year-old Shimon will face 19-year-old Johan Ghazali in flyweight Muay Thai. The Japanese fighter carries a 25-1 career record with four ONE victories and one no contest, while Ghazali brings explosive finishing ability with an 8-3 ONE record and six finishes.

Former K-1 Champion Hiromi Wajima seeks redemption in featherweight kickboxing against Argentina's Ricardo Bravo. The 31-year-old carries a 22-7 record with 18 knockouts but lost his ONE debut to Nabil Anane.

The all-Japanese atomweight kickboxing clash sees promotional debutant Toki Tamaru face Toma Kuroda. The 24-year-old gets his ONE opportunity on home soil, while the 25-year-old Kuroda seeks his second ONE win after claiming just one victory in three appearances.