Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-9. Sera's Resolution

Kusumi Chiharu gets a message one day that he has been selected as a Monster Tamer, and he is prompted to select his first partner. He thinks little of the message until he receives a giant package the following day. He assumes it’s the porn books he ordered, but the huge box ends up containing the unconscious body of a near-naked girl! She’s a ghoul named Zonmi, who intends to fight beside him as his partner.

However, it turns out that other hot girls at his mostly-male high school are also magical entities, and Zonmi may not be the only one who wants to fight by his side!

I was nothing. A lowly omega, destined to live in the shadows of stronger wolves. But on the night of my eighteenth birthday, the moon had other plans for me. My mate was an Alpha’s son. The problem? He wasn’t the only one. The Blackwood triplets—Kael, Ronan, and Darian—each bore the same mark that bound them to me.To be Luna, I would have to survive the chaos of three powerful mates, a jealous rival who wanted my place, and a secret buried deep in my bloodline.Because being chosen by the moon was never a gift. It was a curse.

She just took a nap in the lounge, and when she opened her eyes, she was dressed as a fat country girl who was illiterate in ancient times.

Not to mention delicious and lazy, he is still domineering in the village.

No one wanted to marry her in the eight townships of ten miles, so she finally bought a golden tortoise-in-law.

In a rage, the old bully went down the road and kidnapped a husband for her.

It’s just… Dad, isn’t there something wrong with what you kidnapped?

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After marriage, Fatty Su is very busy.

Busy transforming bully dad and bully brother.

Busy rescuing the beautiful god general husband.

Busy raising three little bullies, Xiaodouding.

Accidentally, she was busy becoming Dayan’s most powerful 1st rank mistress!

- Description from novelbuddy

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.