Kamen Rider Zero-One: S1 E49 - That Is a Heart Kamen Rider Zero-One

In an ironic twist of fate, the one who proves that, “as long as humanity exists, the Ark will return again,” is Aruto Hiden himself. Following the battle with Horobi who aimed for humanity’s destruction, Aruto is unable to restrain his desire for revenge from boiling over at the loss of Is. To prevent the fight between Aruto and Horobi from intensifying, each of the other Riders begin to take action. However, the conclusions they come to invite further tragedy…