Rakuin no Monshou - Volume 11, Chapter 3: In Garbera’s Royal Capital

The top-tier professional player Lis woke up to find himself having crossed into the “Divine Revelation” game, becoming a Viscount enamored with magic. Knowing that he would soon face a continent engulfed in war smoke, grand otherworld expeditions, the mysterious decay of the World Tree, and the constant threat of Abyss Demon invasions... Lis admitted he was a bit panicked. ...... Fortunately, the game system was still in place, and he still possessed the “All-Purpose” Talent. With the memories of his past life, he switched his class to Arcanist, analyzed the Element Model, reshaped the world’s rules, and step by step ascended to that supreme throne. ...... Players complained about him, “This boss is too perverted, he can even grow stronger, we protest!” Elves worshiped him, “Lord Lis is the strongest Divine Favored, he has brought peace to the world.” Mages praised him, “He is the pioneer of magic, as well as the Guardian. His revered name is Lis Kane, He is the god of the arcane.”

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

After three years of hidden marriage, he handed her the divorce papers because his first love had returned and he wanted to give that woman legitimacy to their relationship.She endured the sadness in her heart and signed.On the day he registered his marriage with his white moonlight, she had a car accident, and lost the twins in her womb.From then on, she changed all her contact information and completely left his world.Later it was heard that he left his newlywed wife and searched for her all over the world.On the day they reunited, he blocked her path and begged, “Sweetie, give me a chance, please.”

This is the story where Urahara Kisuke died after Nel failed to save him inside Askin’s Gift Ball Delux and reincarnated in the world of DxD.

I am not sure if I can capture Urahara’s character properly so I apologize in advance if you are not satisfied.

Also, English is not my native language.

I don’t own any of the characters from the canon.