Spoiler

 

So I'm slightly confused. What did Roxas mean when he said,"This could've been the other way around?" and "It has to be you."

 

That he's the one to bring everyone back? I'm confused

Roxas could have lived a full life and never let Sora become whole again, but he sees now that letting Sora live was better for the worlds.

 

Basically Roxas is accepting that Sora is the key to the future, moreso than he would have been.

 

Roxas is such a sad character. :'(

Spoiler

 

So I'm slightly confused. What did Roxas mean when he said,"This could've been the other way around?" and "It has to be you."

 

That he's the one to bring everyone back? I'm confused

 

I think he also means he could have "absorbed" Sora/been the dominant personality, and in this meeting Sora could have been the illusion/other personality not in control. But yeah, he knows it has to be Sora doing everything now, especially since Sora is so understanding and wants to give Roxas his own existance.

What XIIISwords said basically. Roxas has accepted his fate, that it was better to join with sora rather than live out a full life in twilight town. He's sad and hurting about it I suppose, and Sora will save him.

He can accept his fate,but not me!C'mon,he cannot end this way...

The rest,is what XIIISwords said.

Aw poor Roxas How on earth is Sora going to restore him without giving up his own heart, or using the body of Ven?! This game blows my mind