For the next event of the promotion, Valkyrie 08, Rin Nakai and Mizuho Sato were set to fight for Valkyrie openweight title and Mei Yamaguchi would fight against Kyoko Takabayashi to defend Valkyrie featherweight title [REF].
After the Jewels vs. Valkyrie theme in Jewels 13th Ring & 14th Ring, followed also in Jewels 15th Ring, and due to the lack of Valkyrie events, fighters from the Valkyrie promotion started joining rival Japanese promotion Jewels [REF].