Attack on Titan: No Regrets Complete Color Edition manga, ; Attack on Titan: No Regrets In Attack on Titan, Erwin Smith and Captain Levi are an inseparable duo, the calculating brain and pumping heart of the Survey Corps. But their past was a mystery, until the release of the globally-acclaimed bestseller Attack on Titan: No Regrets. Years earlier, the young Erwin was an ambitious military ladder-climber and political prodigy, while Levi lived in another world under the elite’s feet, the Underground. In this place, humans are born and die surrounded by the garbage the Capital throws away, and only the lucky or the ruthless have a chance to emerge onto the surface and see the Sun. Under a fierce exterior, Levi longs for a life of dignity for himself and his friends, while Erwin’s lifelong obsession with the Titans drives him to depths of moral ambiguity. The two men’s collision course will lead to tension, tragedy, and the greatest team of Titan-fighters humanity will ever know.