Toaru Majutsu no Index: New Testament - Volume 16, Epilogue: A Model Answer that Exceeds Disaster - Nightmare_by_Lost_Boy.

Raised on earth to be the ultimate playboy, Ryan finds himself traversing into another world, being the only male on the planet able to cultivate.

Men are used as little more than servants, but a select few are born with the power to be enhancers.

Enhancers seed has special properties that help cultivators rise in levels, but it looks like all the men on this planet have severe erectile dysfunction...

With Ryan's devilishly good looks and skills, will his previous experience being a one-pump chump be enough take the world by storm? Or will his end be as fast as he is and come to a finish prematurely?

[The country finally matched me with a partner—the richest man in the world.]

Ye Xingguang, dumped on the day of her graduation, stormed to the civil department to get in the queue for matchmaking, and somehow got Ye Junqing, the billionaire who topped the Forbes Rich list?

Everyone was saying that Ye Junqing also topped the list of celibates, and Ye Xingguang had expected that he would be difficult to get along with.

However, after their marriage, her husband taught her how to dance, play the piano, survival skills, high society etiquette, and the art of death. He’s a harbor in the storm like a father, and a brother who entertained her whims.

She had thought that she had used up all her luck for this moment, but greater surprises were in store for her… Was she dreaming?

Magic, eastern fantasy, cultivation, scientific technology…

Su Yao passed through and traveled to the Marvel world to become a mutant. He was still in the experimental base. He expressed a little panic…

Fortunately, at the critical moment, the mutant ability ‘imitation’ was awakened to imitate the opponent’s ability!
…
Imitation object→Orochi (title: Sun God, Will of the Earth)
Imitation object→Wanda (title: Scarlet Witch, owner of chaos magic)
Imitation object → Sun God…
…
Professor X: “We must find him as soon as possible and guide him to control his power to avoid causing irreparable disasters!”
Magneto: “You are my child???”
Thor: “Brother?”
Loki: “?”

- Description from novelbuddy