He was sick.
FYI, a summary of important news from Kubo... none of these are literal translations - I just translated the important details. Quoted the Jap text to quote the source, and in case any of you who can understand wants to read it for yourself. Except for the last quote, where I've included a literal translation.
He was in the hospital (or at least stuck recuperating) for 8 days...
8日ぶりの外出。仕事場へ向かいます� ��
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His reply to a fan/friend was that next week's chapter will be postponed (due to his illness).
そうなります。申し訳ない。 "@ankoromoti15: @tite_kubo て、てことは来週のBLEACHは休載…で�� �か…!?"
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And his latest update is that he has to stop work on the next chapter to go to the hospital again.
一旦原稿を止めて病院。
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Not very good news, but at least from his second last post, he appears close to completing the chapter...
「明日の17時に原稿のコピー取りに来 て」って担当にメールしたら「かし�� �まりました!途中で倒れたら連絡下� ��い!」って返信きた。戦場感ある
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Literal trans: When I texted the in-charge, "Come at 5pm tomorrow to pick up the copy of the manuscript," his reply was, "Certainly! If you get knocked out in the mean time, please let me know!" I feel like I'm in a fight scene.
From his colleague's reply, I don't know what Kubo's condition is... but it sounded like something formidable... Not to mention 8 days is pretty long. Well, let's hope for the best!