"So, who are you?"
"I'm Yotsuba! I'm Yotsuba Arisu!"
Anger and urgency made her repeat herself.
"I am Yotsuba Arisu, the Yotsuba Arisu whose every emotion is as clear as a mirror! And I will never go back!"
Just as expected... In truth, the moment Ash saw the Mirror Monster emerge, he had already guessed most of what was going on. Only now did he finally confirm it.
When he first noticed that something was wrong with Arisu, Ash had been unable to decide what to do. After all, there were far too many things in the multiverse that could cause similar effects. Leaving aside modified humans, targeted hypnosis, and brainwashing, there were also altered common sense, reversed personalities, Worm mimicry, and countless other possibilities. Even Ash could not come up with a foolproof solution for every situation.
But this time, Ash was certain. The current Yotsuba Arisu had clearly become this "ugly" version of herself, utterly unlike the past, after fusing with "Mirror Yotsuba Arisu," whose personality was completely opposite to hers and who came from the Mirror World! Just like that saintly Shinji Kido—after fusing with his Mirror World self, he had become a battle-crazed maniac who killed without batting an eye!
As for how to undo this state... Heh, he wondered whether the method from last time would work again.
"Arisu, it's time for me to save you!"
"So it was you!"
Upon seeing the boy reveal his true form as Ash, Yotsuba Arisu's surprise quickly gave way to utterly naked killing intent. "Don't you know how much I hate Kamen Riders like you—fine! I'll send both you and her to that world together, nice and lovingly!"
"No, you can't, Lance!"
But just as she was about to transform, Lance, her partner fairy, refused at once despite