Wandering around the world in the aftermath of the Revolutionary Army's victory over the corrupt Empire, Akame stumbles upon the land of Britannia where she eventually ended up as one of the strongest and most cruelest order of knights in the Kingdom of Liones: the Seven Deadly Sins... (or rather the Eight Deadly Sins)! Akame ga Kill x Nanatsu no Taizai crossover. I own nothing of them.