Don't start crying just because you hear something you don't like.

[but honestly, really looking more engaged now himself as he pushes the chess board aside and gestures to a seat--when'd a third one turn up? don't even worry about it.]

Starting easy, then:

I am Ushiromiya Battler.
I am born from the theories of the future.
I am also born from the mind of someone who knows Ushiromiya Battler.
If you can't disprove my lies-as-truths, they will just become the new truth for Ushiromiya Battler.