Sendai Girls' Pro Wrestling
Since the formation of Pro Wrestling Wave in August 2007, Kaoru has made semi-regular appearances for the promotion, including working its first ever event on August 26, where she defeated Shuu Shibutani. In May 2009, Kaoru took part in the first Catch the Wave tournament, during which she also captured DDT Pro-Wrestling's Ironman Heavymetalweight Championship, holding it less than a day on June 20. After a record of one win and one draw, Kaoru was eliminated from the tournament on August 10 with a loss against eventual tournament winner, Yumi Ohka. During the summer of 2009, Kaoru also made several appearances for Meiko Satomura's Sendai Girls' Pro Wrestling promotion, where she mainly worked with Hiren.