Douluo Dalu 2: The True God King - Chapter 12: [DD2]:

A guy became a brother of Iron man and got the ability to extract genes from anyone. Lets see how he changed the Marvel World

- Description from Novelupdates

[Character Deleted.]I deleted the character I had been raising for over 5 years.To finally defeat the final boss of Demon Fantasy—the one I could never quite beat.For the sake of defeating ‘Baal’.“…I can just start over. I can do it.”And then…[Special reward has been granted!]“What? A mythic-tier trait?”The perfect opportunity had arrived.“This time, for sure!”I’ll raise the strongest mage and take down Baal!At least, that’s what I thought when—[Welcome to Demon Fantasy.]I found myself inside a world teeming with 666 kinds of demons.And I had the ‘special reward’ I just received!“…Fine. Let’s see who wins this.”I was confident.After all, I’ve been a veteran of this game for 10 years.

An Jing had transmigrated into the body of an ancient farm girl whom everyone could bully.On the day she crossed over, she was sold. Alright, seizing the servitude contract, stepping on her good-for-nothing parents, she held her freedom in her grasp, she was in charge of her marriage, she called the shots for her future—nobody could point fingers at her!An Jing assertively slapped her servitude contract onto the man beside her, “Keep it safe, from now on I belong to you.”The man: “......”The man doted on her. Whatever she wanted to do, she did, and they even teamed up to torment all sorts of scum. The couple's life was incredibly satisfying.It's just that the man's identity...(A gratifying story, with both strong male and female leads, 1v1 pampering)