[ Hearing that her memory is gone made him feel like his whole world came crashing down at that very second. This is... one of his biggest fears. Even though he's arrogant, he's always been secretly terrified of being forgotten and with the application, it cemented those fears.

Especially since it happens to be the person that he loves. ]

What do you mean her memory is gone?! How did that happen?

[ He's yelling but it's not anger directed towards Ishida, it's all out of worry and concern for Mio. Even if he didn't exactly mean to yell at his rival. After a moment, he attempts to calm down and lower his voice.

It's evident that Ishida is hiding something from him. He's just not sure what it is. ]

... Is there something you are keeping from me, Ishida? Tell me what happened. Now.