RWBY: Prince of Darkness

In the world of Remnant, looming destruction is always present due to the Grimms. Aciel, a mysterious man, is reincarnated into the body of a young boy with no memory of himself. Aciel, armed with knowledge of Remnant's future, sets out on a journey to uncover the secrets of his reincarnation and to save Remnant from impending doom through his meticulous planning and expertise. Follow Aciel as he battles formidable opponents with his vast experience as the strongest soldier in his previous life!