[4][5][6] Prior to making his professional debut, Yasumoto had a lengthy amateur career, during which he captured a grand total of 24 championships.
[9] Yasumoto was scheduled to face Takuya Hasunuma in a REBELS and Innovation cross-promotional event on January 22, 2017.
[12] Yasumoto challenged Kiminori Matsuzaki for the REBELS Red Super Flyweight title at REBELS.51 on June 11, 2016, at just 16 years of age.
The difference in experience was likewise notable, as Matsuzaki was a 39–fight veteran, while Yasumoto was making only his sixth professional appearance.
[13] Yasumoto won the fight by a unanimous decision, with scores of 49–47, 49–47 and 49–46, spending the majority of the bout pressuring and attempting to overwhelm Matsuzaki.
Matsuzaki's sole moment of success was a left elbow in the third round, which resulted in a doctor check due to a cut before Yasumoto was allowed to continue fighting.
[4] For the first fight of his title reign, Yasumoto was scheduled to face Yuya Kosaka in a non-title bout at ROAD TO KNOCK OUT.2 on July 20, 2017.
[14] The evenly contested fight was ruled a draw by unanimous decision, with all three judges scoring the bout 29–29.
[17] Yasumoto moved back down to 53 kg for his next fight, against Lampoochai Kaewsamrit at Japan Kickboxing Innovation on October 18, 2017.
[19] Yasumoto was scheduled to fight Takahiro Sakuragi at Japan Kickboxing Innovation Champions Carnival 2017 on December 17, 2017.
[25] Yasumoto was scheduled to face the Shootboxing SB Japan Super Bantamweight champion Seiki Ueyama at SHOOT BOXING 2019 act.1 on February 11, 2019 in a non-title bout.
[26] Ueyama won the fight by majority decision, with scores of 30–27, 29–29 and 29–28, handing Yasumoto his first professional loss.
The most significant moment of the bout came in the third round when Ueyama managed to catch Yasumoto in a standing front choke.
[33] Yasumoto fought Plem TC.MuayThai for the WPMF World Featherweight title at JAPAN KICKBOXING INNOVATION on November 17, 2019.
[36] Yasumoto appeared at the second KNOCK OUT CHAMPIONSHIP event as well, being scheduled to face Visanlek Meibukai on September 12, 2020.
[43] Yasumoto was scheduled to face Ryuto Matsumoto for the WBC Muay Thai Japan Featherweight title at NJKF 2021 3rd on September 19, 2021.
[46] On February 8, 2022, it was announced that Yasumoto would fight at Chakuriki 15 on April 27, 2022,[47] against former MAX Muay Thai champion Yodprapsuek Sor Ninthai.
[52] On July 28, three weeks after he had signed with RISE, it was announced that Yasumoto had vacated the KNOCKOUT RED featherweight title.
[55] The bout was later reviewed and changed to a no contest, as Sayyadi was stopped with an elbow, which is an illegal strike under the RISE rule-set.
[62] Yasumoto faced Kiyoto Takahashi at NO KICK NO LIFE Okayama Gym 50th Anniversary Event on May 21, 2023.
[64] Yasumoto was expected to face Kaito Sakaguchi at RISE World Series 2023 Osaka on July 2, 2023.