Kamen Rider Den-O Episode 41

While having Ryotaro help her go shopping, Airi's purse is stolen. Yuto stops the mugger in a spectacle, with Ryotaro shocked to hear that Yuto and Airi appear to be meeting for the first time. He follows Yuto to learn that the red Zeronos cards erase people's memories of Yuto himself and though his negation is the same as Kai's goal, Yuto justifies it to ensure the future.