In terms of stories, characters, battles and musics maybe?

 

 

not much comparison for me.The KH manga(the Days one at least) was WAY better

Kingdom Hearts is pretty unique, it may be comparable to something but nothing I can think of fits well with it.

I dont know about any anime/manga, but it does have a Star Wars feel.

Yes and no. To me

It's certainly gotten the attention of otakus and anime fangirls, but being considered to be an "anime game" is taking it a bit too far. To me.

You can't really compare them because anime/manga and video games are different media.  Not only that, those classifications bring a wide variety of stuff to offer.  Stories, characters, battles, and music can be anything--what's "anime music," unless you count anything sung in Japanese?  Comparing Kingdom Hearts to specific anime/manga out there, sure, I could draw some similarities, but you can't compare it to anime/manga in general.