"...how about... Mirai?"

Yes. Literally. Future. It seemed it was the only thing in his mind ever.

"Ah, well, if you don't like it that's okay. I mean, we can... go with Hikaru, Hikari... something along those lines, tradition and all..." these were nice names too, but he was stuck on his idea of future. "If you do want... to branch off from your clan, you can.."