User blog comment:IamJakuhoRaikoben/Chapter 503: The Last Sight Seen, Review./@comment-130.105.140.154-20160926141925

Something might happen in Chapter 505, 40 chapters after 400 years which is roughly 30 chapters after Memoirs which is 20 chapters after the final chapter of the Tartaros Arc which is 10 chapters after The Girl in the Crystal.

Yeah, these chapters had big revelations.