Kage-no-soto, the leader of a mysterious group Seirokai, thinks of a game. It is to gather elite students, make a cram school and "sell" them to a non-elite school that yearns to be a famous elite school. The price per student is more than 10,000,000 yen.
Nishiwaki orders Saki to get in that elite cram school, Syuko-juku.
The entrance exam is way too difficult and Saki barely gets in by being a "supplemental member". This school seems to have Hitori of Kung-fu Gakuen and Yajugumi in its background.
Saki steps into the "student-recruiting" meeting with Yukino and Kyoko, and fights with the principal of the school Tamura. She then announces that she is Sukeban Deka to Tamura in front of Yukino and Kyoko. The two realize that Saki has been working for an organization and get very disillusioned. Saki leaves without a word.