Sekiro: Shadows Die Twice is a beautifully crafted game. The combination of excellent story-telling and world-building, gorgeous visuals and sound design along with an outstanding combat system will make it one of 2019's best games. The one aspect that keeps it from being a must-play for everyone is the sheer level of difficulty that some players will find off-putting.
The problem is that outside of the actual gameplay, everything else about Jump Force feels unfinished. The hub world is an utter disaster, the character creator feels flat, the roster is unbalanced, and you are almost guaranteed to give up on the story mode before you get to the end.