Nice point. This might mean the series will end in the middle of the second year. (as this year has already begum). I would like to point this
don't mean mean the book will end at Vol.10. There still has much to be explained.
By the way, this could also mean the author has just changed his mind. Remember this was before Vol.7 and the introduction of the rival factions. Before that, it wouldn't be hard fit all plot points over a single year. Now, with Sasaki and her "friends", things are more complex. This was also before the anime right? The newfound huge popularity may have motived the author to continue.
You could even argue the Endless Eight make the ear more event full thenthe rest of his life.
