The Enemy Within

Ace and Duck has return to the Datascape and then a Last Door has appeared

Duck: Enough hurts been undone for you to access the memories reaches of my data. And remember, in there lies the soruce of all sources. We don't know the bugs true origin... or why it's even here.

Ace: So if we take it out, we'll solve the last of the Datascape problems.

Duck: Yep. Everything should be like it was before.

Ace: Thanks you for everything, Duck. I feel like after going through all your memories, now, the journey's made me that much stronger.

Duck: You can't have to thank me.

Ace: Of course I do. There is no way I would've made of this far without your help, Duck. And, you were even there when I wake up. Remember when I first got my hands on the sword? You were there from the start?

Duck: What are you talking about? The first time I saw you was on our city.

Ace: Huh? But, I was so sure I saw you there in your black coat. Hm, that's strange.

Duck: Focus, Ace. Are you ready for this fight? I think I have to stay out here, but I will leave you with this. No matter what's in there now, don't hold back.

Ace: What? Oh, right.

He went to the Last Door and he saw Duck in his Dark Suit

Ace: Duck! How can you-!? No. You're not him. You can't be Duck. The bugs must have absorbed his power and taken this form. Now I see why he felt he had to warn me about you. Here I go!

He is fighting him and he defeated him

Ace: That can cleared all the bugs inside him. It's time to head back.

Gathering Data... Gathering Data... Data Recovery... 90%