We got a decent amount of Daybit here. We race him to get to ORT first, and along the way, we're shown his backstory and motivations. And don't get me wrong, I genuinely like what we got quite a lot. His father may have been erased from history, but he still sticks very firmly to the main lesson he got from him. That every person is honestly trying to do what's best, it's just that often we have very wrong ideas about what the best thing to do is. He's Fujimaru's and Marisbury's enemy, but he applies this philosophy thoroughly, seeing even the good in Marisbury's goal to ensure Human Order is safe on a permanent level.
But since he was obliterated and unobliterated by his father's angel halo, he sees humanity from a cosmic perspective. He knows that if Human Order is secured by Marisbury's methods, humanity will be forever regarded as the worst form of intelligent life in the universe, and he honestly considers that destroying the planet is a better alternative to the damage the Animusphere plot is going to do to our cosmic reputation. But Fujimaru is also someone trying to do what's best like everyone else, so Daybit fairly equips and instructs them to stop the Animusphere plot in his stead if he loses.
Later Daybit manages to offer U-Olga's heart to awaken ORT. He was keeping it on his own ribcage so he dies there. Later when the Lostbelt is disappearing, Fujimaru is transported to chapter 2's Mictlampa to officially get the Master credentials back and Daybit is there. Tezcatlipoca explains that his Mictlampa is not a permanent afterlife. It's the place he offers to those who lost in battle to rest before their next chance of victory on the battlefield comes. A "spa of the soul", as he puts it. The whole scene is as clear as it can be without being explicit that Daybit will be back.
And finally, the opinion I wanted to deliver with this post is... this didn't feel like Anastasia. What I mean with this is that Kadoc's character arc continues past Anastasia, to great effect particularly in Traum, but it still felt like Anastasia was Kadoc's chapter. Meanwhile, the ultimate sensation I've been left with here is Daybit's chapter hasn't happened yet. It wasn't Nahui Mictlan. It's going to be the South Pole chapter or Fuyuki if that's a separate thing.