The treasure of Kinura, in reality, turns out to be a sake cup. The water filled in it gives eternal life to the person who drinks it. Shigaraki-ro wants immortality. To obtain the cup, Shigaraki-ro pressures Kurayami-shirei politically to lay off Saki as the Sukeban Deka. He sends a troop and the cup is taken.
Saki is determined to get the cup back in order not to give immortality to Shiraraki-ro and goes to defeat him with Yukino and Okyo. Yukino and Okyo get beaten, and furthermore, Kurayami orders her to stop, but she wouldn't listen. Nishiwaki comes to help her pursue what she believes.
