*He nods*

There was a guy, who shared the same face as me... Yuto.
I think he somehow became a part of me. Shirou was able to sense the soul of another in me.
But he also sensed something else. A terrifying presence that is trying to swallow us both.

When it takes over I... my dueling is just... more violent and I tend to suffer memory loss when it's in control.
It's happened a few times now... my duel with Kachidoki, fighting Academia in the Quartet... dueling Reiji...