I hated the 3 part Christmas series so much that I deleted it lmao. Instead, I'll just go ahead and spoil some of the stuff that will happen in volume 4 as I said I would. It wont be anything too big, just where it will take place, and what kind of characters will make an appearance and so on.
If you feel like it, then feel free to just skip straight to the author notes at the end. Please read it, it's important.
There will be a 2 year time skip in which 10 years would've passed since the battle with the quinces. In essence, it's caught up to the end of bleach, but there's still 2 years left until the no breathes from hell arc.
We will be taken to the world of the living in a new town with a group of 4 humans that this volume will centre around. The story will be in a slice of life setting like early bleach was for a bit, before all hell breaks loose.
Some surviving Fullbringers from the Heiwa city arc will also make a return, but not in the way you might expect.
There are five great noble families, with the fifth being unnamed. That fifth shall make an appearance and they will be crucial in this volume and forwards.
Hell will become more relevant in this volume, but only towards the end as a prelude to volume 5 which will be the hell arc.