[5][1] Izawa won the second place in the All Japan Women's Sumo Championship ultra-lightweight weight class.
[7] On June 30, 2022, Izawa announced her engagement to fellow mixed martial artist Kosuke "CORO" Terashima.
[9] Izawa began training mixed martial arts in June 2020 due to the COVID-19 pandemic preventing her from competing in judo.
[25] At a press conference held by Rizin on July 7, 2022, it was announced that Izawa would participate in an eight-women grand prix, with a ¥7,000,000 prize for the eventual tournament winner.
Izawa faced the undefeated Laura Fontoura in the tournament quarterfinals, which were held at Rizin 37 - Saitama on July 31, 2022.
[26] She won the fight by a first-round submission, forcing Fontoura to tap with a guillotine choke at the 3:47 minute mark of the opening round.
Kubota was forced to withdraw from the bout however, as the orbital bone fracture which she sustained in her previous fight hadn't yet healed.
[28] Izawa won the fight by a second-round submission, as she forced her opponent to tap to an armbar with just four seconds left in the round.
[32] The fight was postponed for New Year's Eve, as Yamamoto tore her anterior cruciate ligament in training and was forced to undergo surgery.
[33] Izawa faced Suwanan Boonsorn in a women's super atomweight bout at Deep Jewels 41 on May 28, 2023.