Bleach went for 15, not nearly ten, but i disagree, one thing is drawing in your own pace like Sui Ishida doing Choujin X, other is taking a entire year just to publish 4 chapters of 40ish pages, it would be understandable if was the case of Kubo being sick or having a poor physical condition, but looks like he's perfectly fine, he could handle a monthly serialization without a problem, or at least a bi monthly (6 chapters), but maybe this "Season 2" will have more than just 4 chapters, i wish, because again, i cant picture Kubo taking a whole year just to write and draw 4 chapters, or maybe the big amount of time is because he want to release with another "movie" attached to it.