Jog a Memory to Duck and Going to Hollow Bastion

Ace saw Duck going to the next Floor

Duck: Haven't you heard? I told you to go home.

Ace: I can't. Not until I rescue you and Marina.

Duck: I didn't tell you that you want me to be Rescue.

Ace: Did you forget? Lexi's there- waiting for us both to come home.

Duck: You're the one who forget. I told you in Kingdom Heart when we closed the Door... "Take care of Lexi".

Ace look down

Duck: Why don't you just forget it. I'm not going back to that city- for anything!

Ace: It's not just for Lexi! What about our friends even our leader?

Duck: You can have those Guys. I already forgot them.

Ace: You better watch you're mouth!

He's going to fight him

Duck: What about you, Ace? Do you remember who they are? And what they look like?

Ace: Of course I... I... no.

Duck: Ha! Don't feel bad for yourself. That's what the castle does to you- after a while. It's good that you forget all the useless memories you have, and remember for the first time what really matters. I remember it, Ace. I now know the one thing that is most important to me. Protecting Marina. Nothing else matter- not a thing.

Ace remember that they were best friends when they were kids and they have a sword fight

Ace: Hey... Duck... I think I'll jog you're memory.

Duck: Go ahead and try.