[@Grand General]: Uh. Hm. Oh boy, where do I begin...

First: Name. No parent in this day and age would ever give a name that essentially means 'Lightning Lightning' to their child. It's baffling to even imagine, to be quite frank. And having the katana be named "LIGHTNING SWORD" is... How about no? It's painful to think about, having taken the language for four years, so those names have to go. Pronto. Or, well, at least one of the lightnings in the name.

Second: Age 23, famous for iaido, MMA, and wrestling. Also an Olympic gold medalist for Japan. Let's put aside how absurd this whole scenario is for a second (because despite this being an urban [i]fantasy[/i] RP, it still has roots in reality) and point out that the dude was outstanding enough for a deity to just recognize him. No motives, no hidden agenda: just because he was [i]that[/i] good, the god decided to go and make contact with no strings attached. Quite frankly, that's way too absurd. Like, really? All he has to do is pray and slap a picture of the god on his stuff? What drawbacks? Caveats? Anything with meaning behind the contract? Then what's keeping Take-Mikazuchi invested in this person in the first place, especially considering he's not a part of the Japanese anchor and instead [i]personally reached out to the guy[/i]? That leads me to...

Third: Famous (likely worldwide), but is working in a city in the US (not a very famous one, by the way) for an underground semi-vigilante organization. You think that isn't going to raise alarms? Cause problems? His actions have him heavily affiliated with the nation of Japan, so why the hell is he working here in what is more or less a lifetime gig?

Fourth: Lower-middle contract at age 23. I guess I should have clarified that there's only low/mid/high for this, so I accept the blame for that, but being halfway there at that age is simply absurd, especially when stacked on top of all the abilities he already has in that (fairly stacked) form. Also, what the hell is 'affinity to Storm' supposed to mean? I don't mention anything in that vein in the OP.

Fifth: Abilities and skills. Simply linking to a pair of sites is in bad form. It's the equivalent of a student telling a professor to 'just Google it' when asked a question during a lecture or during an exam; it's just not in good form.
On that note, just tossing a bunch of martial arts styles together and expecting me (or anyone else) to understand what they mean at a glance is assuming that we know what thought process was taken to reach this point. What ABOUT the styles were used? Just because you know doesn't mean everyone else will. Also, why the hell is a person so adept at hand-to-hand combat using a sword in combat? And why does he have an actual sword in the middle of an American city without hiding it? Metal detectors are EVERYWHERE these days, after all, and it's not like he can just skip the law because it's famous (especially when that sword starts tasting some blood). Oh, and let's not forget that even if it's a modern-forged sword, there are still people who can (and probably will) just shrug off blows from blades like this like nobody's business.
Also, once again, that name is dumb. Sorry not sorry.

I think those are the major points of contention in the form. Revision or a complete overhaul is highly recommended, friend.