Behind the Truth: Half Blooded Ascension - Version 0.15 by Legitheart - Adult Sex Game

The first version of the game, tells the story about dragon's last descendant and the return of the maou-sama, who were both extinct hundreds of years ago due to an interclan war, in addition to the betrayal by humans. Everything is still unknown to us as well for the protagonist, but what to expect on this journey? How is he still alive for so long? What's the connection between the demon king and the dragon king?
Come check this yourself!!