Martial King's Retired Life - Chapter 110Book 15:

Yang Gang accidentally became the imposter heir to a wealthy family, with a beautiful older sister and a twin younger sister at home...

Noan transmigrated to a world that blends advanced technology and magic, with countless gates leading to other strange worlds.In that world, he took over the body of a young man of the same name who had just died.He realised that in this world, he was one of the 0.1% of the population who had the ability to become a landlord and had the right to go to mysterious lands to build territories.However, he was only a Rank F lord, the lowest and weakest rank in the landlord rankings.Besides, his family was like blood-sucking demons. Not only did he wear out his labour, but his younger brother was also jealous of him becoming a landlord, so he hired thugs to beat him to death.Fortunately, the 'old Noan' died, giving the 'new Noan' a body to live again.This Noan was not a coward; he was not weak like the 'old Noan'.And of course, the goddess of luck smiled upon him. Although he is only a Rank F Landlord, who can only summon useless Skeletons, he possesses the only Rank SSS talent in the world - Almighty Fusion.He can fuse ordinary skeletons and transform them into the King of the Undead, the lord of hell.He can help a weak succubus become the almighty fallen angel.He can turn a small lizard into the King of Dragons, the nightmare of all creatures.Besides, Noan also begins to lift the curtain that has hidden the truth about the new lands.

5 years after the world changed, the final boss appeared.