Shut Up, Malevolent Dragon! I Don’t Want to Have Any More Children With You

After being defeated and captured, the dragon-slaying hero Leon became a captive of the Silver Dragon Empress. With a resolve for certain death, Leon unexpectedly turned the tables and successfully imp**gnated the empress on his verge of dying. He thought that this would be enough to let the empress live with shame for the rest of her life and he also fulfilled his duty as a dragon slayer. However, two years later, when Leon opened his eyes, he found a little dragon girl with a tail lying beside him… … — Description from novelcodex.org