Kamen Rider Kabuto
The Saddest Battle (1x40)
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Rena recovers her memories after encountering Punch and KickHopper, but was saved by Kamen Rider Drake. After becoming Uca Worm again, she proceeds to fight Drake, but is forced into a weak position. After sacrificing his love for her to come to the realization that she was evil, Drake makes a heart-paining choice and destroys Uca Worm.