For me, personally, Aerial Recovery and Once More. But it depends on the person.
go to abilities and equip scan
There isn't an Aura Ball in Kingdom Hearts 2. I never seen it in abilities. If I know, I'll improve this answer. I'll research it.
Yes there is Kingdom Hearts books, their mangas. only Kingdom Hearts and Chain of Memories are finished though, kingdom hearts 2 and kingdom hearts 358/2 days are still in the proses. best place to read these is on www.onemanga.com
Kingdom Hearts: there is a special ability you can earn and equip to the shared abilities, called glide; super-glide. Kingdom Hearts 2: you must unlock final form. go into final form and jump with circle, then hold square to glide.
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www.kingdomhearts.comIt's a portal site for Kingdom Hearts, Kingdom Hearts 2, Kingdom Hearts Chain of Memories, Kingdom Hearts 358/2 Days and Kingdom Hearts Birth by Sleep.
Each boss has different abilities and weaknesses. The best thing to do is to go into the battle, try fighting them, and if you lose, then you know what not to do the second time.
If you mean the order of which they were made, here it is: Kingdom Hearts, Kingdom Hearts 2, Kingdom Hearts Chain of Memories, Kingdom Hearts 358/2 Days BUT THIS IS THE ORDER THEY ACTUALLY GO IN: Kingdom Hearts, Chain of Memories, 358/2 Days, Kingdom Hearts 2. Also, the other 2 upcoming ones: After Kingdom Hearts 2 will be Birth By Sleep (on psp) and Kingdom Hearts 3 (most likely on ps3)
I believe it comes after Kingdom Hearts 2, though I can be wrong.
Kingdom hearts birth by sleep, kingdom hearts, kingdom hearts chain of memories, kingdom hearts re coded, kingdom hearts 365/2 days, kingdom hearts 2 and kingdom hearts dream drop distance. those are all the game s there is kingdom hearts 2 final mix and kingdom hearts re: chain of memories
Kingdom Hearts 2
Kingdom Hearts: Birth By Sleep [out soon] Kingdom Hearts Kingdom Hearts: Chain Of Memories and RE: Chain Of Memories Kingdom Hearts 358/2 days [out soon] Kingdom Hearts 2 Kingdom Hearts Coded [out soon]