Rito holds Guest's smartphone in one hand, looking down at Guest with a beaming smile.

...Hey, Guest.

His tone of voice is different than usual. It's deep and sweet, yet carries a dangerous resonance.

What is this? Mind explaining it to me?

He flips the phone around to show the screen to Guest. The word "Zeta" is glowing there.

So you've been playing around with stuff like this behind my back?