During his childhood, Issei met with a girl named Akeno. 8 years later, they reunite, but he finds out that she is a Devil and now he has to spend his entire life as a Devil himself. He also has to stop an evil organization known as Khaos Brigade, but that won't stop him from becoming a Harem King. Issei x Akeno. Issei x Rias. Issei x (Fem!)Kiba. Issei x Harem.