Kamen Rider Kabuto

Shocking Fact (1x31)

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Kagami tries to learn more about how Tsurugi became a Worm, eventually he ends up at Jiya who has a secret that he has been keeping from Tsurugi. For helping him in a battle, Tsurugi proclaims that he and Kagami shall now be best friends. Hiyori, after being attacked by a group of Worms, evolves into Sisyra Worm, her true form.