cat? i thought he might be the black cat, but its never confirmed.

The black cat in the manga is Shingo, which story is in http://www.mangaupdates.com/series.html?id=73982

I don't see any indications that Natsume is a cat, so i assume he isn't one.

To that cat indication. Natsume would change for his cat form, when he is excited, so i think the answer is that Natsume is not a cat.

oops! lol sorry i didnt notice that. i didnt realize they were connected. thanks for taking the time to reply. =)

note: i reread the manga and found the chapter that he appears, how did i miss that? 0_0

I'm glad i could help ^_^

Haha... I sometimes think other things while reading manga and after reading and thinking the same time, i totally forget what i just read, so have to reread again XD