As Yuuya and Yuuto fight to save Ruri, Serena appears before them. Everything is going as the doctor who controls the two of them planned. The power of the Parasite Monster drives Yuuya into a corner, and now something strange is beginning to happen to Yuuya himself...! When two dragons, Odd Eyes and Dark Rebellion, manifest, an Yuuya's expression looks like that of a demon!!
Have you ever wondered