It was the sister of Japanese MMA promotion Cage Force, both operated by Greatest Common Multiple (GCM) Communication.

[5] Valkyrie first event was held as planned on 8 November 2008 (2008-11-08), with a card featuring a victorious Tsuji, Yasuko Tamada, Tomomi Sunaba and Roxanne Modafferi against their rivals.

[11] Due to an injury, Yuka Tsuji would be unable to defend her title against Mei Yamaguchi, so it was decided to postpone that match for another event.

The event featured as the main bout Yuka Tsuji against Mei Yamaguchi for the featherweight title as well as the first round of the flyweight tournament to crown the first champion of the promotion.

During the event, future star Rin Nakai beat seasoned veteran Megumi Yabushita and in the flyweight tournament final Yasuko Tamada defeated Naoko Omuro to become Valkyrie's first champion in that weight.

[21][22] Valkyrie 07, held on 26 September 2010 (2010-09-26), was an event with only three professional MMA bouts, two of which were part of the tournament to crown the first openweight champion of the promotion.

[25] On 28 November 2010 (2010-11-28) the event took place, with Nakai becoming the openweight champion and Yamaguchi barely defending the featherweight title with a majority draw in a very controversial decision.