"Maybe not just a third. A fourth, or perhaps factions within factions betraying each other...when you think about it like that, there are all sorts of possibilities."

And right now, the way he is...the way things are, he can't prove any of it. Still, if it really was the case, then...

"...I...want to find the reason behind it all. Why they felt it was necessary to instigate something like this..."

There could be a myriad of motivations, Yusei thinks. Especially in this world which he only has barely come to understand, there could be a story here he doesn't know-no, there's definitely a story here he doesn't know.

"I want to understand...if I can, then maybe..."

Then maybe, he could find a way to prevent such a thing from happening again. Foolishly optimistic, but...that's how he's learned to duel. It's not a habit that'll go away now.