I am the first leviathan eater of humanity again:Futa - Chapter 19: Hidden secret pt2

When you get to the other world, you acquire new properties, there is no limit for your achievements and you become an overlord…Welcome to my world…

- Description from Novelupdates

The countries of Mephius and Garbera have been waging a war for ten years and are trying to put an end to this long fight through a political marriage between the two royal families. Orba, who was driven from his home because of the war and was forced to become a gladiator, looks exactly like the crown prince of Mephius, and it has been decided he will be substituting him during the wedding ceremony. On the other hand, Vileena, the princess of Garbera, has secretly decided to ensnare the crown prince for her own country’s interests.

Qin Hao, possessing remarkable skills, returns to the bustling city, punching the wastrels and reveling in the company of beauties! With the Divine Doctor's Skill in one hand, he specializes in curing beauties but can't treat his continuous streak of romantic encounters, so he has no choice but to hold the school beauty in his arms!

Like his father, Kael Voss was abandoned and forgotten, the last son of Hades. The cursed son of the Underworld. Before dying, Hades passed on his crown to Kael. story about a guy who is tring to protect he beloved.