Moto Sekai Ichi'i no Sub-chara Ikusei Nikki - Chapter 33.5: Extra: Idle Talk - Back to My Parents’ Home

Luis Hartmann activated the mysterious Portal and began the journey of traveling between two worlds. In Immortal world, there are various immortal cultivators who can destroy mountains and live for thousands of years. In his own world, it is a Western fantasy realm where people can become knights or wizards, with different kinds of races. Luis, using the resources of both worlds, rises through the ranks. The life seed that knights awaken when becoming apprentice knights transforms into spiritual roots in the immortal world. With strategic wisdom, he helped his family become the eternal family, dominating both worlds. [Knight + Martial Arts + Immortal Cultivators + Family building]

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

This book features a slice-of-life style with minimal system presence, welcome to enjoy.[Theoretically, this system can target any cognitive being in the universe.][After selecting a target, the host will randomly acquire the target's skill level and talent.][When the target is of the same gender, skill experience acquisition speed +50%, skill level cap -50%.][When the target is of a different species, trigger 404 aura, skill experience acquisition speed +100%, instant death probability +99%.][After a failed targeting, the punishment mechanism is activated, halving the host's basic stats, entering an absolute weak state, and resetting skill levels.]Traversing into this world, Bai Chuan Ze Ping observes this problematic system, then looks at the top student and beautiful girl of the class...Hmm, perhaps... this classmate could be a fine learning companion.PS: This book is also known as “My Talent Comes from My Girlfriend.”

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