Simply one of the best manga I've ever read, and is my favourite of all time.

First off, the art is amazing. It's okay in the earlier chapters, but you can see the artstyle and art improving chapter by chapter. The style of colouring is unique, one look and I can easily tell it's done by Mochizuki-sensei.

Secondly, the plot. Some plot are already foreshadowed in earlier chapters but it's really subtle, you don't really notice it until you went back to re-read the manga. It shows that this story is planned in mind from the beginning, it does not go off track like some other manga. This manga can get a bit confusing due to the twists, hence it makes this manga good for re-reading. You'll notice the foreshadow moment only when you really pay attention to it.

Thirdly, the character. The main characters get their necessary development, but one big development that is really good is Xerxes Break's development. Also, Mochizuki-sensei made it a point on what is lost is lost. This works great for character development, so that the character's change feels realistic.

Best points of this manga are probably the plot and the character development. Totally recommended.