Maybe a Fake Gintama - Chapter 57: There Are Always a Few Words That Make You So Angry That You Can’t Suppress It [Rengokukan Part 1]

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

This novel is also known as Master Fu's Mysterious Darling Wife

She is the The Young Miss of Military family Shen, her face is peerless, her temperament is cold, and she is her family’s treasure, but isn’t accepted as one’s child by her mother;

He is The Sole Heir to the top giant Fu Family, his power is unparalleled, indifferent high-born, the captain of the mysterious military force, and the youngest commander-in-chief.

Because of her grandmother’s wishes, she married him at lightning speed. She thought that it was a marriage that she needed, but she didn’t expect to be greeted with his extreme pampering.

- Description from Novelupdates

I fervently critiqued the development of a Sherlock Holmes-based mystery gal game.Villain Maker: Fulfilling the probability of Professor Moriarty’s appearance.Love-Hate Relationship: Becoming ‘that man’ for Holmes.Lady of London: Completing one sham marriage with Watson.Freeze: Receiving a confession from Inspector Lestrade.Phantom Thief’s Treasure: Getting kidnapped by the Phantom Thief Lupin.In doing so, become this twisted world’s very probability.Best wishes, Mr. Isaac Adler.I’m screwed.

The protagonist is an accidental time traveler - he didn't wait, didn't guess, only dreamed, but ended up in history, which he didn't pay much attention to. He was just lucky with his lineage.Ryo is a new member of the Nara clan, from the Uzumaki lineage on his father's side, and it so happened that he was born not at the beginning of the known plot, but more than three decades and two world wars later. Now he has to figure out how to get out of this situation however he can.