The Seven Deadly Sins Volume 5

It's A Showdown! Four of the Sins have been reunited and it feels almost?so good. Entering a fighting tournament where the?grand prize is Diane's weapon, the unthinkable happens?when the Sins and Holy Knights clash on stage! But?who is the other faction of Holy Knights, dubbed the?"New Generation", and what could this monstrous?group of demon-like knights be planning?