Zero no Tsukaima - Volume 15 Chapter 5

Transmigrating into a world of cultivation, you find yourself at the lowest rung of the sect's hierarchy. Everyone wants to bully you to gain some benefits. Fortunately, there are always a few junior brothers and sisters who are 'generous and understanding', allowing you to improve peacefully and secretly grow stronger. Years later, unbeknownst to anyone, you successfully become a deity within the sect. This day, your master visits you at the sect's request.'The upper echelons of the sect believe you have been diligent and loyal over the years, and though your strength is mediocre, you are an honest person, so they've found a marriage alliance for you.''An alliance marriage?''Not exactly. The other family has a rule: marrying into their family means taking their surname.'Is this... becoming a son-in-law who marries into the wife's family?

Tang was cheated by her husband who got another woman pregnant. Tricked by the mistress and mother-in-law, she had been criticized by the public and kicked out of her husband’s family. Then, there comes Su, who showed up like a saviour for her, prevented her from all the difficulties that her ex’s family made to her. He held her in his arms, haughtily said to them, ‘It will only be me that can bully my girl! Anyone who dares to bully her is opposing me!’ She was shocked. And her mother-in-law said she was a wanton woman. After that, he was always protecting her, treated her preciously. He made her realized that even the second marriage could also make her so happy!

- Description from Novelupdates

In the winter of Taikang Year 3, a girl pays a visit to her future in-laws, the Ning Family of Beiliu, Yangcheng.

After her engagement was denied, the girl decided to hang herself in front of the Ning Family to show them her sincerity.

When the girl who had died opened her eyes once more, many people’s fates were changed forever.

- Description from Novelupdates

King of Harem, Pioneer of All, R-18 Story

My name is Mike Tyson. I was a normal dude that had an abnormal death. I was lucky enough to get reincarnated in another world.

This is earth, but alternate earth or real? I don't know. But I know that I was born with the fate of a protagonist. Unsuccessful in awakening my innate talent, I spend two years in my middle-school.

But this year, everything changed. I awakened something, and not just an innate ability but also a unique ability. That was the true start of my life.

A life that I feared became reality. My fate was in my hand, but the fate of my little dragon was in the hands of the system. Spreading the legs of women in bed, I found a new way to gain strength.

Heavenly Maidens, Supreme Fairies, shave that cave of yours. My little dragon will fly from one cave to another until it meets the destined cave.

Embracing the power given to me, I let the beast inside of my soul go wild. I was no longer restricted by anyone or anything.

The title does not represent me, I represent the title. Spreading the legs of hundred women, I will ascend to that title and become the one and only 'God of Sex'.

Standing in front of a creature with a dark face and red scales, I broadened my chest and asked “I have talent, looks, money, women, power, and little brother. What gives you the confidence to challenge me?”

Every little detail including name, identity, is fictional. They might be relatable but please don't relate them.

Special Tags- weak to strong, fast strength growth, adult, mature, Character Growth

(Read this book if you want to increase the size of your little brother)