The Protagonist's Party is Too Diligent - Chapter 286

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

This novel is also known as Reborn In Space: Pampering The Genius Doctor And Businesswoman

In her past life, she had no one to rely on and died alone in jail.

But now, she has been reborn, given a second chance.

Got an heirloom.
Activated a mystical Space Dimension.
Studied medicine and became a genius doctor.
Opened a clinic.
Founded a company.
Bought a house and land.
Found her blood relatives.
Her worth became higher and higher.
Her fan club became bigger and bigger.

“Young master, the Zhao family’s young master faked an illness and went to future young miss’s place for treatment. . .” said a servant.

“Break his legs! Fail his organs! A fake illness? I’ll make him sick completely!” A man said.

“Yes! But young master. . . what are you doing?” The servant said, confused.

The man finished swallowing a bunch of expired pills and said, “I’m sick, gotta go find my wife for some treatment!”

- Description from Novelupdates

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

They whisper my name in fear. Justin Black. The guy who sits in the back of the class, always in black, always untouchable. The one everyone watches but no one dares to approach.They don’t know me. Not really.Because if they did, they’d stay the hell away.I don’t do friends. I don’t do relationships. I don’t do attachments.But then there’s her.June Matthews—cheer captain, golden girl, a walking distraction. She’s everything I hate… and yet, she’s in my way. Assigned to me. Forced into my space. Testing my patience.She thinks she can handle me.She’s dead wrong.Because I have a secret. A place where I go to release the darkness inside me. Where names don’t exist, where pleasure and pain are one and the same. A world where people fulfill their deepest, most twisted fantasies.June doesn’t belong in my world.But the longer she stays, the more I want to pull her under.And once I do… I’m not sure I’ll ever let her go.