Why Did You Summon Me? - Chapter 10

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

I, Seiren Shikino grew up in an orphanage. On the day of my high school graduation, I somehow got transported to another world, and turned into a girl as well. ……Eh, this isn’t my original world and gender, right!? It seems that I’m now Seiren, the daughter of a noble from another world. This is a light hearted story about family and romance.

The cousin isn’t called Biao Ge. He has his own name. His name is Cheng Jinyu. From the phrase—– Wo Jin Huai Yu (to hold and cherish a beautiful jade; a person with good moral values), it’s the name his father gave him.

But Chen Yuze calls him Biao Ge, so Biao Ge became his name.

Biao Ge has a sworn enemy, his name is Gu Bokai. Biao Ge doesn’t know how he provoked this person. He detested himself very much. Like being disgusted with sh*t in a garbage can.

However one day Biao Ge was told to marry Gu Bokai. As for the reason, an extreme pain in the ass, because Biao Ge’s life is hard!

Gu Bo Kai has married three times and now has three dead wives…

Gu Bo Kai: No, absolutely not!

Mother Gu: First cry, second stir up trouble, third hang oneself (throwing a temper tantrum). Continue to get married, or I die and let you see.

Gu Bo Kai: Why?

Mother Gu: He is tough, can avoid being killed by you and can also have children.

(Shou and Gong have no kinship. Biao Ge is what others call this person. It’s like a name)

- Description from Novelupdates