Kaori Yoneyama
The first ever Natsu Onna Kettei Tournament took place during two shows on August 2, 2009. The tournament featured fourteen singles wrestlers, including six outside participants; Ayako Sato from Ito Dojo, freelancers Chihiro Oikawa, Megumi Yabushita and Toshie Uematsu, Makoto from Ice Ribbon and Yumi Ohka from Pro Wrestling Wave. Oikawa and Makoto were granted automatic spots in the second round of the tournament. The eventual tournament winner, Kaori Yoneyama, went on to unsuccessfully challenge Kayoko Haruyama for the JWP Openweight Championship on October 4.