Sukeban Deka II: Legend of the Iron Mask

An Assassin Car: Kill Kage-no-soto (1x17)

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Saki infiltrates an all boys' school with Okyo as a purchase booth helper. Her true purpose is to get in contact with a boy, Osamu, who used to be an executive of Seirokai until a year ago. Osamu is plotting something using a remote control car with an automatic bomb. He is attacked by Seirokai and Saki saves him. He tells her the story about himself; he and his sister once belonged to Seirokai but his sister was killed by them because she learned that Soto wears a pacemaker in his heart. Osamu is targeting Soto's life. Saki wouldn't let Soto die yet, so she barely prevents the bomb-carrying radio-controlled car to crash into Soto. Soto leaves for the US to get his pacemaker adjusted.