I would write this story myself but, while I can come up with a plot, I can't write very well. So If your interested in using this idea PM me and I'll help review the content.
From what I've seen no one has come up with a cross over like this so... tell me if it might be a good read.
It's a Kekkaishi and X-men:evolution cross over.
It takes place shortly after the end of the Kekkaishi series because I was never really satisfied with the ending.
Here's my plot idea:
Yoshimori is in his 2nd year of high school when things start happening. Whenever he's meditating he "senses" his surroundings. Kind of like echolocation but without sound. Xavier discovers Yoshmori while using cerebro. However when He tells Logan who it is, Logan refuses to go. This is because while Logan was still in Japan he became friends with Yoshimori's mom, who quite frankly terrifies him. So Logan and Yoshimori have a Uncle nephew relationship.
You can pair Yoshimori with any of the girls from X-men:evolution. But I insist that Yoshimori be immune to Rogue's power. Mostly because I would like to see them paired up in either friendship or more.
