I do not usually speak when I disagree, but... [He just watches with a soft frown, leaning in and wrapping his arms around Marco slowly in a hug.]

You did not. [He's positive. Japan is so positive Ace realized he was loved, and there was a part of him that was happy. His nature was more similar in to Japan's that he had this bittersweet tone to it, but he realized...

But Marco being home rather than here was something good for Marco. Japan could see that too.]

Marco and the rest of Ace's nakama gave him meaning. They made Ace realize he was loved. Please do not forget that.