One Piece: I'm not Roger

Becoming a clone of Roger… absorbing the remnant of Roger’s soul. But he is not Roger. At this point in time, the Straw Hat Pirates have just defeated Gecko Moria, and the storm of the Marineford War is about to erupt. The era is on the brink of chaos. Roger conquered the sea once. He will conquer it again, not as Roger… but as the man who stands at the very top. Aether, a clone of Roger? — Description from novelcodex.org