The 20 year-old, fighting in just his sixth professional contest, ended the fight at the end of the seventh round to score his fifth career stoppage and take home the coveted green belt.
Also on the bill, Akira Yaegashi made a successful fourth defence of his WBC flyweight title with a ninth round knockout of Odilon Zaleta to record his 20th victory and tenth in total via stoppage.
The two-weight world title holder, 31, made it five wins on the spin and may now be contemplating a further move up in weight after a long spell at the top of the 112lb division.
Undefeated Roman Gonzalez also made an appearance on the packed Japan card as the solid Nicaraguan puncher took his standout CV to 33 knockouts from 39 victories by halting the hapless Juan Purisima in three rounds.
Gonzalez, 26, could now challenge the headlining Yaegashi for his WBC version, or on the other hand fight for the vacant belt if the Japanese fighter does decide to move on to pastures new.
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