I lost my Copy System and awakened a Plundering System - Prologue

When encountering demons, a young man with two horns on his head, red hair reaching his waist, and an extremely handsome appearance leads the demons to the front.

Youdou: Actually, I really don’t want to be a master of monsters. This profession is completely useless. My ideal is to become a magic stick…, bah, it’s to become a great onmyoji.

All the monsters: My lord, wake up, you are the leader of the monsters yourself!

- Description from novelbuddy

There are times when you’ll still never be good enough no matter how hard you try.

Born with a frail twin sister, Li Caiyi gives most of her time to take care of Li Chunhua. Her parents and older brother trust her to take care of her sister, yet Li Caiyi can’t help but feel the disparity in treatment and affection given to both of them.

In her whole life, she has never become anyone’s first priority. Not in the heart of her family, and especially not in the heart of her childhood friend, the Young Master of Meng family, Meng Renshu.

When Li Caiyi became Meng Renshu’s wife, Li Caiyi thought she could finally become someone’s first priority, but everything fell apart in just three years.

She decides to let everything go. Then she meets Shen Qiang in the most unexpected place. No one wants to accompany her in her life, yet this stranger offers to accompany her in death.

“Do you want to jump together?”

When she opened her eyes, Li Caiyi had gone back to her high school times.

This time, she won’t make the wrong choice again.

But where can she find Shen Qiang?!

In the era of universal mechas, people can go to the endless abyss, collect materials, strengthen and forge their own mechas, and master the power of destroying the world.

Jiang Chen traveled through time and awakened his talent [Immortal Unarmed]. Once the mecha is broken, he can permanently absorb its power and receive multiple bonuses.

…

At the bottom of the abyss, when the Old Demon God finally broke the Titan mecha with great effort, a hand stretched out from the fragments and held down its head.

“Congratulations, you have unlocked my limiter.”

- Description from novelbuddy

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.