Conquering The Game's World - Chapter 40: F-Rank

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

The simulation is over, and the entry is obtained: a showdown!

Looking at this entry, Zhao Meng was stunned.

“How should this term be used?”

“Hey! Here’s a wounded fox!”

…

A few years later, a woman who looked like a fairy appeared in front of him, and said:

“My lord, I’m here to repay my favor!”

This book is also called “Starting from Transforming Monsters”

- Description from novelbuddy

[Youngster don't understand the charm of 'milfs', instead mistaking Lolitas as the treaures]Leading a life filled with regret and pain, Li Zhiyan reborn with a seemingly feeble 'system', taking back to 2010.Right at the moment he was about to be publicly rejected at graduation party after confessing his feelings with a bouquet of flowers to the school beauty, Yu Sisi, and about to become a joke among his peers for years.“I...I am reborn?”The wheels of a new fate begin to turn.All along, the school beauty Yu Sisi has only been deceiving and playing with him. In his past life, Li Zhiyan himself did not know and became a laughingstock, but now, as a reborn person, he has already seen the true face of this girl.He chuckled coldly, glanced at the mother of Yu Sisi on the side, the 41-year-old Aunt Gu Wanzhou.She was mature, intellectual, elegant, kind, considerate, low-profile.The sex appeal of a mature milf lady was radiating all around.Li Zhiyan decisively picked up the flowers, ignored the school beauty, and boldly confessed his feelings to this attractive mature woman in front of everyone.“Lady Gu, actually, I've had feelings for you for quite a while.”

I was betrayed in my first life.A cripple, broken and discarded—I died after catching the one I loved in bed with the only person I ever called a friend.That was the start of real torment.When I woke up, it was in another world.A goddess stood before me.She told me I could go back.Back to my world.Back to everything I lost.All I had to do… was play my part.The side character.And I did.I followed the script.Played my role to perfection.They hated me.Mocked me.Used me.Again and again.But I kept going. Because I believed her.Because I wanted to go home.Then one day, I found out.The hard way.It was all a lie.There was no going back.There never was.She used me.Again.Just like everyone else.Thrown away like trash once I outlived my usefulness.That was the day something inside me snapped.And so, I made a vow.I would take everything from her.I would enslave every single heroine she chose.And I would kill the hero she placed all her hopes on.If she wanted to protect this world…Then I would burn it down.But the more I tried, the more things started to change.And then one day—I found one of the heroines.One of the hero's yanderes I had enslaved.She stood there, trembling, a knife in her hand.“You’re not going anywhere,” she whispered, eyes wild.“I won’t let them have you. You belong to me.”...What. The. Fuck. Is. Happening?!