Nanatsu no Taizai Movie 2: Hikari ni Norowareshi Mono-tachi

The Holy War is finally over, and its heroes begin separating to enjoy the peace they spent so long fighting for. Meliodas and Elizabeth travel together, King and Diane prepare for their wedding, and Britannia appears ready to enter a new age. The celebration is shattered when armies of giants and fairies attack under the command of two legendary figures thought to belong to the past. Behind them stands an even greater force that refuses to accept the war's conclusion and sees cooperation between former enemies as an order that must be erased. Meliodas and his friends return to battle, this time not to win peace, but to defend the very idea that their world is allowed to change.