MTL - Marvel: Starting From the Dimensional Demon God - Chapter 21

In an era where humans and demons compete in fierce battles for survival, the Hero has fallen.“…I will take your place.”Thus began the deception of the fake Hero.If exposed, it could mean the destruction of humanity.…But the imposter is just too good at it.[Academia], [Professor], [Hero]

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

_ _ _ _ MXFXF relationship. Please read the note. Please add it to the collection then and support me. All feedback will be appreciated. Check my profile for more workShe was not the heiress, the eldest, or the youngest. She just existed in the family, keeping her head down and letting herself wash away until she could leave.“I tried standing out, staying quiet, and even voicing my thoughts. But no matter what I do, I am never acknowledged. Does my existence even matter? After all, it's not like anyone in this family even likes me.”Rika Goodwill was the shame of her family. Born the middle 'beta' child of a prominent Alpha-Omega couple, it was natural for her to be neglected compared to her perfect Alpha brother and sweet Omega sister.Her situation outside of her family was no better. People avoided her because of her mafia family and judged her nature without a second thought.Her only friends were the 'sweetheart couple of the century'. But Rika had somehow become a third wheel between their bickering and frequent breakups.Over the course of her 17-year-old life, Rika had come to accept her fate and move on. After all, no amount of complaining would ever change her situation of being a third wheel.Collage was supposed to be her big break. It was supposed to be the time Rika had for herself, where she could feel like herself, so she applied for a place where no one knew her.This was supposed to be her lucky break! Rika was supposed to get away from her worsening life.But neither her family nor her 'friends' were ready to let her go, and it did not take long for her peaceful life to turn sour.

Su Wan is a Realm Destroyer. She shuttles to different time-spaces using the identity of the “Cannon Fodder Ex-Girlfriend”, dedicated to plotting how to happily tear apart the male protagonist and the female protagonist. –There’s no such thing as protagonists who can’t be torn apart, only Ex-Girlfriends who don’t work hard enough~

- Description from Novelupdates