If not under warranty, you could try to fix it yourself if the damage is minor. Maybe some glue or tape could do the trick. But for major damages, it might be best to look for a professional repair service or consider buying a new one.
It's possible that there could be a new Bleach manga in the future, but as of now, there's no concrete information or confirmation. Maybe if there's enough demand from fans or the creator has new ideas, it could happen.