Original video animation. Title from container. Statement of responsibility from Wikipedia. Voices, Kana Hanazawa, Tomoaki Maeno, Daisuke Ono. Originally broadcast as a television special in 2018. Based on the eleventh chapter of the manga by Akane Shimizu.
Summary:
A mysterious cell wearing a stylish hat appears before the regular cells, who are bored with just the same work over and over again, every day. This mysterious cell lures the regular cells into a mischievous scheme against White Blood Cell and Killer T Cell. The regular cells enjoy working out their everyday, pent-up frustration. But, just who exactly is this cell wearing a stylish hat?
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