into an extension round. Morisaka was awarded the split decision, after the fourth round was fought. Move up to featherweight Following his first professional loss, Egawa was scheduled to face Koichiro Nabeshima at Krush.81 on October 1, 2017. He moved up to featherweight for this bout, a 2.5 kg increase in weight compared to his previous fights. He won the fight by a first-round knockout. Egawa was scheduled to face Shoya Masumoto at Krush.85 on February 12, 2018. Masumoto won the fight by majority decision, with scores of 29–28, 28–28 and 29–28. Egawa returned to K-1 for his next fight, as he was scheduled to face Yuta Otaki at K-1 World GP 2018: Featherweight Championship Tournament on June 17, 2018. Egawa knocked Otaki down early on in the first round, with a left hook. He continued landing unanswered shots, which forced the referee to stop the fight. Egawa was scheduled to face Hayato at K-1 World GP 2018: 3rd Super Lightweight Championship Tournament on November 3, 2018. The fight was ruled a draw following the first three rounds, with one judge scoring the fight as an even 29–29, while the remaining two judges were split between Egawa and Hayato. Egawa was awarded the unanimous decision after an extra round was fought. Krush Featherweight champion Egawa vs. Saikyo Egawa was scheduled to challenge the reigning Krush Featherweight champion Haruma Saikyo in the main event of Krush.97 on January 26, 2019, in what was Saikyo's second title defense. Egawa won the fight by majority decision, with scores of 30–29, 29-29 and 30–28. During the post-fight interview, Egawa stated his desire to fight for the K-1 title in the near future. During a K-1 press-conference held on February 1, 2019, Egawa claimed that he had broken his hand prior to the Masumoto match in February 2018, although the injury had healed by the Saikyo fight. Egawa vs. Tetsu Egawa was scheduled to make his first Krush title defense against Tetsu at Krush.102 on June 21, 2019. Egawa was forced to take a five-month rest from competition, as he had injured his left hand against Saikyo. He prepared for the bout at his primary gym Power of Dream, while also spending a portion of his fight camp at the Sitsongpeenong gym in Thailand. Egawa won the fight by a first-round technical knockout. At the halfway point of the round, Egawa stunned Tetsu with a