Mayumi Ozaki
In December 2011, Hamada took part in American promotion Chikara's "JoshiMania" weekend, teaming with Cherry to defeat Mayumi Ozaki and Mio Shirai in her night one match on December 2. The following day, Hamada was defeated by Aja Kong in the main event. On the third and final night of the tour, Hamada was defeated in another main event, this time by Sara Del Rey.