Mayumi Ozaki
Matsumoto returned from her knee injury on April 12, 2015, at a Shimmer Women Athletes event. She returned early in order to take part in Tomoka Nakagawa's second to last match, where she, Nakagawa, Kellie Skater and Misaki Ohata were defeated by Aja Kong, Dynamite Kansai, Kyoko Kimura and Mayumi Ozaki. Matsumoto's official return match took place at her self produced event on June 28, where she was defeated by Arisa Nakajima. On December 6, Matsumoto won her first title since her return, when she, Evie and Kellie Skater captured the vacant Artist of Stardom Championship.