World Boxing Council (WBC) bantamweight champion Takuma Inoue and mandatory challenger Tenshin Nasukawa are reportedly finalizing plans for a high-profile rematch this September in Japan.
Levi Luna of ESPN KnockOut broke the news during a Saturday night broadcast on June 15, 2026, indicating that the two domestic stars are expected to meet less than a year after their first championship encounter.
The reported bout would pit the 30-year-old champion against a former kickboxing phenom who is desperate to avenge the only loss on his professional boxing record.
Takuma Inoue won their first meeting on November 24, 2025, to claim the vacant WBC world bantamweight title at the Toyota Arena Tokyo. While Tenshin Nasukawa found success in the opening rounds, the champion eventually adjusted and took control of the contest.
The fight concluded with a clear unanimous decision for Takuma Inoue, with judges submitting scorecards of 117-111 and 116-112 twice. Since that night, both fighters have remained active and successful against world-class opposition.
Takuma Inoue currently holds a professional record of 22-2 with 5 KOs and recently tightened his grip on the division. On May 2, 2026, he conducted a WBC world bantamweight championship defense at the Tokyo Dome, defeating former four-division champion Kazuto Ioka by unanimous decision.
This victory showed he can perform under the highest pressure, much like how Oleksandr Usyk prioritizes defensive mastery and ring intelligence over raw aggression when facing dangerous opponents.
Tenshin Nasukawa remains the mandatory challenger
Tenshin Nasukawa holds the position of mandatory challenger for the WBC title, a status that has kept him as the primary threat to the champion’s reign. The 27-year-old southpaw, who brought an unblemished 40-0 kickboxing record into the sport, has rapidly climbed the boxing ranks since his April 2023 debut.
In his most recent outing on April 11, 2026, at Kokugikan, he secured a ninth-round win over former unified super flyweight champion Juan Francisco Estrada.
The victory over Juan Francisco Estrada was a WBC world bantamweight championship fight that served as the biggest win of Tenshin Nasukawa’s career to date. By stopping a veteran of Estrada’s caliber, the challenger proved that he has adapted his explosive style to the requirements of 12-round championship boxing.
While some fans might argue the first fight against Takuma Inoue was decisive, the commercial appeal of a rematch between two of Japan’s most recognizable athletes is considerable.
This domestic rivalry is reminiscent of other high-profile retaliatory bouts in the sport. For instance, Roy Jones Jr. announced the Spence-Cornejo rematch specifically to settle a competitive score.
Similarly, the WBC’s enforcement of the mandatory status ensures this bout carries the weight of a legitimate world title defense rather than being a non-title showcase. It forces the champion to deal with a challenger who has physically matured since their first meeting.
Physical dimensions and tactical shifts
The first fight highlighted interesting physical dynamics between the two competitors. Tenshin Nasukawa carries a significant reach advantage at 176 cm, compared to just 164 cm for Takuma Inoue. Despite this 12 cm difference, the champion managed to close the distance and outwork the challenger during the second half of their 2025 bout.
In that first encounter, both men weighed in at 117.7 pounds, just under the 118-pound bantamweight limit.
Expectations for the September rematch center on whether Tenshin Nasukawa can utilize his superior reach more effectively this time around. Since his loss to Takuma Inoue, his knockout ratio has slightly improved, now sitting at 8-1 with 3 KOs according to some recent records. However, the boxing world often sees elite talents emerge from setbacks.
For example, Canelo Alvarez claimed a Crawford rematch would yield a different result because of adjustments following a loss, a sentiment Nasukawa likely shares.
Takuma Inoue, standing at 164 cm with an orthodox stance, has proven to be a technical master of the bantamweight division. His ability to withstand the speed of a southpaw like Tenshin Nasukawa was the deciding factor in their first meeting.
Having already defended his WBC belt against a veteran like Kazuto Ioka, the champion enters this proposed September date as the man to beat in one of boxing’s most competitive weight classes.
Waiting for the official announcement in Japan
While the report from Levi Luna has generated significant buzz, no official announcement from the promoters or the WBC has been made as of June 15, 2026. If the report proves accurate, the fight will likely be the centerpiece of a major televised event in Japan this fall.
A September date would allow both men adequate recovery time following their respective victories in April and May, ensuring both are at peak physical condition.
The stakes for this rematch are particularly high for Tenshin Nasukawa. While he has found immense success in multiple combat sports, a second loss to the same opponent could limit his trajectory at the world-title level in boxing.
For the champion, Takuma Inoue, a second win would effectively clear out his top mandatory threat and allow him to look toward unifications with other titleholders. Japanese fight fans now look toward Tokyo for a formal press conference to confirm the details.
