Kaiba (2008)

Set in a dystopian future, Kaiba follows the story of a young man with memory loss who embarks on a journey to recover his past. In this world, memories can be digitized and manipulated, allowing people to change their bodies and identities. As Kaiba explores different worlds and encounters various characters, he uncovers a conspiracy that threatens the very fabric of this reality. With themes of love, loss, and self-discovery, Kaiba is a mesmerizing anime that delves into the complexities of memory and identity.