Overlord: Blody stream

Momonga has a son named (Y/N) IRL. He took care of him ever since his GF died while in child birth. When his son was 10 Momonga showed him a DMMO-RPG game called Yggdrasil and let him into his and his friends clan of Ainz Ooal Gown. (Y/N) made his character using a feature called gene combiner so his ingame character is the son of Momonga and Albedo. 8 years later and thousands of in-game hours and thousands of dungeon raids later the servers of Yggdrasil are closing. Momonga and his son have decided to spend the last hours of the game online and wait for the servers to shut down. After all both the father and son have fond memories of their time in Yggdrasil.

I do not own the anime series or the manga. All of those rights go to their owners.