Even though it's just a filler arc, the conversation between Mira and Racer is one of my favorite moments. It's actually really deep and I love that Mira has this kindness, even to her enemies. "You don't need to keep running. Nobody's chasing you" was such a beautiful emotion, I love it.
(Once again though, I do think it would have made much more of an emotional impact if Lisanna just had stayed dead)