Truly a masterpiece. I was hooked from the beginning. I have read a lot of mangas but this one was truly unique in its own way. Just like Monster, some things weren't explained like we never found out about scroll. Sure, we know it was to change past/future. Probably Billy never wanted to help humans. There's much more which wasn't explained but I guess that's how Urasawa's mangas are because the ending in Monster wasn't explained much either haha. He truly leaves us with a mystery which we can never truly solve but get closer to.. I am going to read all of Urasawa's work. Truly an underratedMangaka,