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In Akihabara, Sakura Sakuragi (Yurika Kubo) runs cat cafe "Mocha." She listens to her customers’ troubles there. The various customers that enter her cafe also take comfort in the cats that reside there.
One night at a strange cram school, a class and a small film crew shooting a commercial are attacked by two teenage girls.
Follows the events from "Ada: Senritsu-hen" but from the antagonist's point of view.