Lord Mythical Beast, Please Feed Me

After her carefully planned life was ruthlessly exposed, she was sheltered by the mysterious man on the other side of the phone. It turns out that I met you before, but you made me forget. His origins are unknown, his background is a mystery, and he has lived in blank memory for unknown years. The myth that has been missing for thousands of years is resurrected in the comic city. I want to escape but I am trapped in it. I don't know if the undercurrent is forced to accept it or it is an old debt from the past. No matter what it is, protecting you, the Lord who has trouble collecting light with his own monsters, is everything to me. It is my debt to you for five thousand years. [A male protagonist with a changeable personality and a warm heart. Note: This is not sinister, this is not cold. Plus the off-line heroine who is gentle and savage in one life]