Dragon and Phoenix Proud the Nine Heavens

What would happen when a person from another world awakened the memories of his previous life? Especially since he was a cautious otaku who read a lot of books (comics, novels) in his previous life. What would happen? What would he do when he discovered the monster sealed in his soul? How would he control the two divine beast bloodlines in his body after they awakened? When a beauty came to him, how should he choose? When he experienced the disaster of extermination, where should he go? In the end, how would he face family and friendship after becoming an avenger? If he wanted to know all of this, he could find it in Dragon and Phoenix Proud in the Ninth Heaven.