The scribble is the Tree of Life diagram. As see in the opening and on the ceiling of Gendo's office.

Go ahead. That's what the scans are good for anyway =).

Nice scan. Love Yuki.

My bad Japanese translates the text on the right as "The signs of spring overture".

Thanks for sharing. Although looks like a bad cut n paste job that put Haruhi in front of that orange background. The lines around Haruhi are so rough.

This is from Shakugan No Shana and Nanatsuiro Drops. It's already uploaded in the cross over gallery though.