Global Reincarnation: Only I Know the Plot - Chapter 862:

A certain girl aspiring to be an adventurer was invited to join the Hero’s Party by chance and became their apprentice. However, she was not actually treated as a real apprentice, and was subjected to physical violence and verbal ab*se every day.In the end, she was told that she had no talent and was about to be expelled from the party.However, the hero promised the girl that if she could stay in the Demon Forest for a week, her expulsion would be revoked. Unaware of the fact that she had been tricked, the girl was abandoned in the forest without even a weapon to defend herself.But the Hero’s Party had no idea that the girl had been observing every battle they had faced. Nobody knew of the girl’s talent.A talent, for which even the word “genius” would be too modest to describe, would allow her to reach the realm of excellence.The girl who was able to escape the forest soon registered herself as an adventurer, and in no time, she overtook the fierce fighters one after another.This was a tale of the rapid growth of a girl with the strongest physical prowess.A talented monster doesn’t need to be taught – someone once stated.

In the past life, he was an aerodynamic engineer of a well-known company, and in this life, he is a college student of a famous school.

When the two identities are perfectly integrated, what sparks will appear.

His life experience is also slowly uncovering the mystery, whether he can beat the tycoons of this era, and whether he can stand at the peak of world business.

- Description from novelbuddy

On his usual way to home Mikado Tsuchio fell into a hole that suddenly opened on the ground. Just like that, Tsuchio falls in a different world, he lands on a Grappler Wyvern and manages to tame it.

Tsuchio decides just like that to live in the other world, the reason for his quick decision: he wants to make a monster girl harem.

After choking to death on a watermelon, Rong Jiahui thought that she would enter the netherworld and be reincarnated.

But when she opened her eyes, she discovered, to her very horror, that she had returned twelve years into the past…

Looking at the beautiful and awkward “little brother” that would be conferred the title of Marshal in the future for outstanding military service, she almost let out a snort of laughter.

She firmly decided to hug the thigh of this little brother, and climb to the top of her life!

The plan was beautiful, but it had just one problem.

Why had this little brother… suddenly turned into…

A little sister…

- Description from Novelupdates