Angelo Gabrini writes the synopses. It takes him a few days, and by about a few days after the release of Japanese volumes we have a complete indepth summary to read. Some of the details and context can't always make it into the format, but Angelo does an incredible job all the same.
Yes, Angelo is our lord and savior, but in case one day he doesn't get to something as fast as you like, please remember he does this as a passion and a hobby. He doesn't get paid so please be respectful of his time and remain understanding.
Yes, he does a good job. I'm glad there is someone on this wiki who can take the time to write the synopses. If I knew Japanese, I definitely could have helped.