Becoming Immortal Through Getting Married - Chapter 12: Desperate

Xiao Ran transmigrated to a fantasy world. As a dungeon guard in the Celestial Dungeon, with a special floor called the Purgatory meant for powerful demons and martial arts experts, he faced a huge challenge from the start. The Eldest Princess acquired a forbidden martial arts technique and was banished to the Purgatory. However, no one was powerful enough to restrain her. All the dungeon guards were defeated. Xiao Ran stepped up and declared, “Your Highness, it’s better for you to behave yourself on my territory” and effortlessly subdued the Eldest Princess.

He progressed from imprisoning the Eldest Princess to delivering the Great Xia Kingdom from the evil clutches of various demons and evil martial arts experts.

…

Xiao Ran was the mastermind behind the scenes.

My daughters started regressing out of nowhere, stirring up a storm because they missed their mother.…But I haven’t even married yet, let alone have any daughters!?

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

A Sword Dao expert, mastering Sword Control across thousands of miles, traverses heaven and earth.An Peak Alchemy Master with supreme power, their Medicine City can revive the dead and regenerate bones.A Talismanic Elixir can annihilate strong enemies and demons.The youngest Eternal Life Pill Master of the continent is betrayed during the refining of an Immortal Pill.Three years later, a young man named Chu Feng from the fallen Sword King Mansion joins the Ten Thousand Sword Sect.The enemies and treacherous disciples who once opposed the Eternal Life Pill Master are now in utter fear.