Fate Online: Shadow - Chapter 305 Thunder Bluff Chieftain: Orgar

A Russian economics expert had been making money through long-short strategies during the Russia-Ukraine war. Despite his economic success, he felt deep regret about Russia's historical mistakes. He wrote on his blog that “Russia has been on the wrong path since the 19th century,” critically analyzing Russia's history. Then, remarkably, he traveled back in time to 1891 and found himself in the body of Russian Crown Prince Nicholas II during his visit to Japan.

Damien Castro, the God of Lust in the Thousand Starry Domain, was known for his unparalleled mastery of pleasure.His deeds you asked?The Immortal Lotus of the Heavenly Peak Sect, known for her beauty and swordsmanship, fell for his charm.The Frozen Lotus of the Silver Moon Clan, who's cold as ice, was turned into a soft woman.The Empress of the Phoenix Clan submitted to him both in body and spirit.The leader of the Heavenly Shadow Sect, once untouchable to all men, was claimed in just one day.Lastly, the Princess of the Spirit Blossom Sect had her heart stolen while he was just casually traveling.After failing to ascend the Heaven Breaker Tribulation, he died. But when all hope seemed lost, he suddenly awoke in the body of a young man who looked exactly like him, though malnourished.In his return, however, he found himself with a 10 times boost in everything he does. Read as how Damien challenges the heavens once again.

The end of the world is coming, the world has undergone great changes, and everything has changed. Plants, animals, and even insects, as long as there are living things, have mutated.
Become more powerful, and even evolved supernatural abilities, such as chickens and ducks that can fly to the sky, such as cats and dogs that can breathe fire.
But only humans, without any obvious changes, seem to have fallen from the top of the food chain to the bottom of the food chain overnight.
Any creature that can open its mouth to eat can treat humans as food.
But fortunately, this world has not completely killed humans. Gradually, humans discovered that they had the ability to cultivate compatibility with other creatures.
As long as it has a high degree of compatibility with some powerful mutant creatures, it can be used for its own use to achieve the purpose of protecting itself.
Fang He is a person who is very compatible with mutant animals, but it is also because of his ability that he has changed from the strongest to the stupidest.
Fang He, who was reborn, said, “Hmph, this time…”

- Description from novelbuddy

Reborn into the world of Yugioh, it's natural if my goal is to become the best duelist!