Meliodas and his friends jump back into action when the new era of peace is threatened by a powerful magical alliance that could spell the end for all.

A vampire girl goes to school for the first time and makes friends with humans.

In a flooded world, nations form "Azur Lane" to fight "Sirens". Factions "Union", "Royal", "Iron Blood", and "Sakura Empire" wield anthropomorphized warships from a "Wisdom Cube".