FamishedGod

Sana Scarlett, the notorious criminal with the ability to Devour other people's abilities, and Ethan Everhart, an inconspicuous bartender who was also her childhood sweetheart, vanished from the face of Earth on a random day. 

Nobody knew where they had gone, and only they themselves knew that Ethan had received a call from somewhere far away. From another world, the Immortal World. 

And on their first day, they also gained the greatest Immortal Sect's legacy. 

They even had the abilities that they carried over from Earth!

....

Expect:

A very intriguing Cultivation System.
Nice world-building.
Meaningful characters.
Nice plot. Plot too.
And a very vast world.
No cliché!
Explicit lemons!

No harem.

Earth's Strongest Couple in the Immortal World

She kissed him and licked her lips. "I am greedy, Ethe. Super duper greedy. I want you for myself. If I have more souls, I can use them to possess a bird or an animal and become your Familiar myself. This art would split my soul into two pieces, and each would be my own consciousness. I want to train it. I will be your Familiar."

"I'd rather not have a Familiar than lose you," Ethan's reply this time was cold. "This conversation is heading nowhere. Come give me a kiss instead and drop the matter."

"Ethan, you are a fucking dumbass!"

"If I practice this Secret Art and fail, so what?" she asked.

"So what?!" Ethan was nearly enraged.

I'll smother you