Hmm...if Namine is Kairi's nobody, then do all of those Organization XIII people have "alter-ego" type forms as well? Does that mean that Kairi somehow became a nobody because I thought the nobodies were only the Org. 13 people who were Xehanort's "assistants", and they don't have alter egos.
you should beat all of the bosses in the other worlds (if you haven't already) and it will become much easier. it took me like 40+ tries to beat him and then when i beat all of the worlds then it was easy.
I am trying to beat sephiroth at lv. 37. i don't have that glide thing or the ulima weapon. is it possible to beat sephiroth at this level, and where do you get ultima?