MTL - The Life of a Villain Starting From Naruto - Chapter 124 so the answer is

An ordinary person who has passed through the Marvel World to gain the phagocyte ability and began to devour superpowers, and became the king of Marvel!

There are many female lords. The protagonist has gradually become the king of the Marvel world from ordinary people. The initial ability is the physique that changes through traversing. It can devour and stabilises without any side effects. The system is only an aid, you can also cross the plane!

- Description from Novelupdates

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.

【1】
President Song Bai has written abusive articles for ten years, exclusively abusing Sadin.
Song Bai put on the male worm in the pen and was abusing Sadin.
Looking left and right, I couldn’t bear it.
In the end, I decided to take it home and pamper it.
【2】
As soon as the news that the female insects hurt the male insects came out, the whole country was in an uproar, and the people who ate melons said they would definitely leave.
The males say no to leave, eat melons and say revenge before leaving.
The male worm basks in the first baby, eats the melon and says that he will leave after giving birth to the male cub.
The male worm took a group photo of a family of four, eating melons and saying…he couldn’t say anything.
【3】
The moment he hurt the hero, Sardin’s heart was ashes.
He was full of despair, and he was willing to accept any punishment as long as he did not divorce.
Many years later, the heirs are around their knees, and their lover is on the side.
Sadin realized later that this punishment was to punish him for peace and joy in this life.

The outside is sloppy, the inside is indifferent, and the outside is cold and the inside is soft.
Note: Zerg background, it doesn’t matter if you read it for the first time
Note 2: Mutual favor, attack favor, just look at favor and attack with caution.
Note 3: Clean party carefully

Content tags: childbirth, a soft spot, interstellar sweet text
Search keywords: Protagonist: Song Bai, Sadin ┃ Supporting role: wb@一二三外人 ┃ Others:

- Description from novelbuddy

Guzi transmigrated into a novel and became a character in a story about a true and false rich heiress.While others who transmigrated into novels become the true heiress, she became the fake heiress. To make matters worse, both she and the true heiress are engaged.She was engaged to the son of a military leader, while the true heiress was engaged to a divorced man with three children from his previous marriage.Guzi's parents, caring for the true heiress, decide to have Guzi marry in her place. In the book, the character “Guzi” was furious and attempted suicide but failed.As a result, she lost the love and favor of her parents. After marrying the divorced man,“Guzi” blamed him for all the wrongdoings and mistreated his children. Eventually, he could no longer tolerate her actions and divorced her. “Guzi” would become a destitute beggar and die miserably on the street.After transmigrating into the book, Guzi left her family and married the divorced man. When she faced the man and his three children, Guzi believed that the original owner of her body made a terrible mistake.This was a painless experience of being a mother without any hardships to endure!On the other hand, the true heiress had to deal with her husband's illegitimate child and fight for family assets. She would lead a daily life full of hardships.The true heiress consoled herself, thinking that she was still better off than Guzi. She had to raise someone else's child and care for an old man.However, one day she sees Guzi stepping out of a luxurious car with a protruding belly, supported by the richest man in the city.Looking aggrieved, Guzi got out of the car and said, “We agreed not to have children!”The man beside her responded tenderly, “Sorry, my mistake.”