MTL - I Ship My Adversary X Me - Chapter 11

Qin Chuan arrived in a parallel world and got bound to a system.

(Completed) She and he were born on the same year, month, day, and time, and on their first day of life, their unscrupulous parents arranged their future marriage.From then on... she began to cling to him.As a child, Luo Mengmeng would say in her baby voice to Gu Zhihan, “Husband, I want to marry you,” but he would grimace and respond, “Who would marry you!”When they grew up, Gu Zhihan hooked her chin, pinned her against the corner, and smirked, “Mengmeng, I heard getting married is cheap nowadays, I'll treat you.”From birth to kindergarten, elementary, middle school, high school, and university, they had always been together.[Growth literature, from childhood to adulthood, exclusively adored]

500 years ago, Chen Xi was devoured by a crack in the void and was transported into a cultivation world.

500 years later, he returned back to Earth after enduring through several hardships and discovered that only 5 years had gone by.

…

In the courtyard, beauty at the side, a candle flame wavering.

A gush of clear wind, half a full moon, the peach tree remains unchanging.

…

Wait, whose kid is this?! Why is she calling me papa? Gazing at the little girl in front of him with skin as pale as jade, Chen Xi froze.

…

　
Returning home from cultivation, starting as a stay-at-home dad.

In this life, not fighting to be a king nor claiming to be a tyrant, only praying to peacefully be a wife-pampering mad devil and a child-protecting daddy!

- Description from Novelupdates

There are three realms in the multi verse; The Cosmic, the Mortal and the Nether realm.

Hal grew up in the mortal realm with no idea whatsoever of who his parents were.

His love for relics, adventure and the occasional danger would aid him in finding a genie's lamp.

Rubbing a genie's lamp should grant three wishes, but Hal is struck by lightening instead and eventually arrives in the Cosmic realm with a large book in his mind space titled; The Primordial Cosmic Grimiore, that apparently holds all knowledge for a perpetual reign.

And so Hal's journey begins in a little city called Salmon city, in the body of a 17 year old boy also named Hal but was sold into slavery by his own father.

Hal finds out who his mother (prior to reincarnation) whose bloodline now flows unmixed in his new body is....

Join Hal as he battles mortals, Dragons, phoenixes, Gods and many more together with his harem of Beauties for the complete subjugation of the three realms.