According to
Chigusa Nagayo, former chairman of
All Japan Women's Pro-Wrestling Takashi Matsunaga, who died on July 11, 2009, entrusted his will to her, saying "I want to do it again at Yokohama Arena" in 2012. This referred to his significantly appreciation towards Nagayo's in-ring performance. Just before Matsunaga's death, his father, who died in the spring of 2018, said, "Please show me your professional wrestling skills one more time".
Kaoru, who was an ex-ally of Nagayo during their time in
Gaea Japan, returned after about three years of fighting illness, and together they put the base of the newfounded promotion of Marvelous That's Women Pro Wrestling. The promotion held its first official event on March 22, 2014, a
house show hosted at
Ota City General Gymnasium. Over the years, the promotion has established partnerships with various promotions from the
Japanese independent scene. On October 1, 2021, Marvelous held a cross-over event with
Pro Wrestling Wave, promotion with which seldomly collaborates, the
Marvelous/WAVE Fusion ~ Tommy 40th Anniversary. Marvelous started a professional relationship with
World Wonder Ring Stardom at the beginning of 2022, sending various wrestlers from the roster to compete in rookie-based
pay-per-views promoted by the latter promotion under the brand of "New Blood". Marvelous was first represented by Ai Houzan and Maria at
Stardom New Blood 1 on March 11, 2022. Since its birth, the promotion never established their own created championships. But at
GAEAism Decade Of Quarter Century, an independent event promoted on June 13, 2021, to commemorate sixteen years since the dissolution of
Gaea Japan, it was announced that the latter promotion's
AAAW Single Championship and
AAAW Tag Team Championship would be revived and sanctioned by Marvelous beginning with 2022. On January 10,
Takumi Iroha became the first AAAW Single Champion, while on May 1,
Itsuki Aoki and
Rin Kadokura became the first AAAW Tag Team Champions under Marvelous. On May 20, 2025, Marvelous announced joining the streaming service platform
Wrestle Universe. ==Roster==