"I just wish girls would stop throwing things at me" is a little reference to the Valentine's Day Special, where Shiori threw cookies at Taku. In this case, dodging the trophy probably was the better choice than catching it, though...

Kei comes rushing back into the room, worried because of the loud noise.

Kei: "What happened!? Are you two okay?"

Dusting off the arm he used to shield himself against the mirror shards, Taku seems rather nonchalant once more.

Taku: "We're fine. I just wish girls would stop throwing things at me."
Kei: "B-But... the mirror. Was that you, Serika?"

She still sits on the sofa, all shaken up now.

Serika: "W-Well, I... uh..."
Taku: "Come on. Don't you think you owe me an explanation?"
Serika: "...the mirror... it suddenly distorted just like in those rumors...! And there was..."
Taku: "What?"
Serika: "A-Another Taku. One that moved independently, I mean! Not just a reflection! A-And he wore other clothes and had a knife, and..."

The boys look at each other when they hear this weird story.

Taku & Kei: "..."
Serika: "Uh... you don't believe me, do you? I'm serious! It looked like he wanted to stab Taku! It happened so quickly, I... just grabbed the trophy and threw it at the mirror..."