is a Japanese professional wrestler better known by the ring name Yumi Ohka (桜花 由美 Ōka Yumi). Originally trained by the now defunct JDStar promotion, Ohka now works for Oz Academy and Pro Wrestling Wave. She is currently in her second reign as the Wave Single Champion, while also being a former Oz Academy Tag Team Champion and Wave Tag Team Champion. She is the managing director of Zabun Co., Ltd., which owns Pro Wrestling Wave November 27, Ohka and Matsumoto defeated the Oz Academy Tag Team Champions, Carlos Amano and Manami Toyota, in a non-title match.On February 26, 2012, Ohka, Matsumoto, Nagashima and Yu-Yu had a four-way match to determine the number one contender to their leader Mayumi Ozaki's Oz Academy Openweight Championship. Ohka was eliminated from the match by the eventual winner, Chikayo Nagashima.On February 10, 2013, Ohka and Mayumi Ozaki defeated Akino and Ayumi Kurihara to win the Oz Academy Tag Team Championship. They, however, lost the title just 28 days later in their first defense to the team of Hiroyo Matsumoto and Tomoka Nakagawa of Jungle Jack 21. Ohka attempted to recapture the title from Matsumoto and Nakagawa with new Seikigun partner Mio Shirai on September 15, but the two were unsuccessful.When Shirai was given the storyline booking rights for Oz Academy's March 2 event, she handed Ohka and Mayumi Ozaki a rematch for the Oz Academy Tag Team Championship. The two were, however, defeated in the title match by Matsumoto and Nakagawa. On December 13, 2015, Ohka received her first ever shot at the Oz Academy Openweight Championship, but was defeated by the defending champion, Sonoko Kato North America (2011–present) On October 1, 2011, Ohka made her American debut for the Shimmer Women Athletes promotion in Berwyn, Illinois, losing to Sara Del Rey as part of Volume 41.Later that same day on Volume 42, Ohka defeated Courtney Rush. The following day on Volumes 43 and 44, Ohka defeated Mia Yim and lost to Serena Deeb, respectively. During her week in North America, Ohka also made an appearance for nCw Femmes Fatales in Montreal, Quebec, Canada on October 8, losing to Cheerleader Melissa. On October 27, 2012, Ohka returned to the United States and Shimmer Women Athletes, defeating Christina Von Eerie as part of Volume 49.Later that same night on Volume 50, Ohka was defeated by Kellie Skater. The following night on Volume 51, Ohka defeated Shimmer Tag Team Champion Nicole Matthews in a singles match. Later that same night on Volume 52, Ohka defeated fellow Wave worker Ohka returned to Shimmer on April 11, 2015, losing to Madison Eagles on Volume 72. The following day on Volume 74, Ohka defeated Nicole Savoy. Ohka returned to Shimmer on October 10, first defeating Makoto on Volume 76 and then losing to Jessicka Havok on Volume 77 The following day, Ohka formed a tag team with Cheerleader Melissa, with the two defeating Hiroyo Matsumoto and Makoto on Volume 78 and KC Spinelli and Xandra Bale on Volume 79.Ohka returned to Shimmer in June 2016.Ohka teamed up with Melanie Cruise throughout the run and on Volume 85, the two unsuccessfully challenged Evie and Heidi Lovelace for the Shimmer Tag Team Championshi