Talk:Delvers/@comment-103.11.252.24-20171024111831/@comment-2601:187:4000:FF0D:D99F:F79:40E7:DF42-20180111082108

The become one requires something.............................. unique to happen.

It's a big deal, and you can learn if you catch up on the manga. (the anime follows it closesly I believe ends around chapter 25 or so if I remember correctly)