[ Sakura's in much the same situation as Libra. Fuyuki in her era was a relatively advanced city, if not so futuristic as this place, but she had the specific peculiarity of being from a family of mages, and so she was literally familiar with magic in an ancient filial sense. She's hapless with technology as well, so she is abstaining from playing the games. ]

Apparently the color has something to do with this energy. [ Bios, they called it. ] We have something like that in my world, too. Mana.

[ maybe it was the same thing, but by another name? though if so, it did manifest quite differently. Bios had nothing to do with Servants, after all. at least not so far as she knew. though if the magic was anything like that of her world, perhaps conjuring was one form. ]

Do you think we're here for a reason?

[ she watches the gamers, if a bit absently. in truth, Sakura's mind is a little overwhelmed by all this. ]