[Amane's not so naive to think that his lie sounds entirely convincing-- after all, most people didn't have an actual identical twin to use as a convenient identity smokescreen. Still, he can't help but feel a bit irked that this other boy thought he was faking the only part of his excuse that was, in fact, the truth.]

It's true! [Oops, he got so indignant, he slipped back into Japanese, but he course corrects back into English as he continues:] It does not sound real, but I have a twin brother, honest! I can show you--

[And he reaches into his pocket to grab his phone, to pull up one of the photos he has of them--

But then the other boy offers up that invite, and he pauses all activity, momentarily stunned. Amane for sure had missed that notice, given he wasn't one for going into the DU offices often (or... at all, really), and it sounded like it was extended across the board to all Dreamers, but... well. It was the first time someone near his age outright invited him to a party, even indirectly, and it takes him a few seconds to recalibrate and figure out a way to answer.]

... oh. Cool.

[Okay, so the invite wasn't technically for him, and he had to remember to act as such, so he clears his throat a little and adds:]

Um... my brother, he is busy and does not go to the Union building much, so... can you send me the details on your phone? I will make sure to send it to him so he knows. I am sure he will be... very happy to go.