Eldritch Creature's Guide - Chapter 10 Undercurrents

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

This is a work of fiction. Names, characters, places and incidents either are products of the author’s imagination or are used fictitiously. Any resemblance to actual events or locales or persons, living or dead, is entirely coincidental.Please note that this work of fiction is not safe for work (NSFW). It contains words, scenes, and phrases not suitable for audiences below 18. Be aware.—All the characters here are 18 and above—SynopsisOkumura Kouhei is in love with Saonji Hina, but she’s as cold as ice and doesn’t let anyone get close—she's like a flower that’s impossible to reach. However, everything changes when Kouhei uncovers a secret about Hina that turns his world upside down.To make matters even more complicated, members of the student council decide to get involved, adding to the chaos swirling around him. And let’s not forget about his neighbor next door, who seems to have her own agenda.What will happen to Kouhei now that he’s stumbled upon something he wasn’t meant to discover as a mere human?

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

Li Ling, the eldest son of the Duke of Zhenguo, was a good man with great talent and courage.

However, his beloved wife Shen felt that living with him was boring. After five years of marriage, she was submissive to him in every possible way, but he was not the least bit enthusiastic about her.

If it was just because of his cold temper, she would admit it.

But when the Huns invade, the ninth princess will be forced to get married. Li Ling was so angry that he asked for an order to go to war for the sake of his princess cousin.

She finally understood the reason why he treated her coldly.

She was so angry that she didn’t want to be with him.

The letter of departure has been drawn up, and we are waiting for Li Ling to return to sign it.

Unexpectedly, after waking up, she went back to the time when she was newly married to Li Ling…

—

Li Ling married a well-behaved little wife who was completely obedient to him. After being married for more than a month, she served him comfortably.

In the past few days, Li Ling discovered that something was wrong with his bride.

She stopped dressing him in the morning, and she stopped serving him dishes and soup at dinner. She turned away as soon as he approached her at night.

The dignified and solemn Li Ling couldn’t help it.

He came forward and said, “Madam, what’s wrong with you?”

She just gave him a roll of her eyes.

Li Ling scratched his head: “It’s your first time coming to the mansion. Madam, you don’t feel comfortable with it?”

She bowed her head and said nothing.

Li Ling was so itchy that he had to pay attention to her every move in order to pry into his wife’s heart.

One day, while watching a polo match, he saw her hiding her face and smiling at a man on the field; another day, he saw her resting her chin in her hands, reading a poem by a talented man in a daze; and at a palace banquet, he actually saw the prince. I smiled at her…

Li Ling’s heart became more and more confused day by day.

- Description from novelbuddy