Harem Overlord: I ALWAYS Finish Quick! - Chapter 27 Dr. Rubenstein

Soul System Online...][Vengeful Spirit Detected]Zero was once a legend a warrior feared and respected across the land, an SSS-ranked hero at the peak of power. But even the strongest are not immune to betrayal. His so-called allies turned against him, casting him into oblivion. Now, he lingers as a vengeful spirit, unable to move on, his legend seemingly forgotten.But fate isn’t done with him yet.When a mysterious boy with the rare ability to see and communicate with spirits crosses his path, Zero sees a chance for revenge and maybe even redemption. Armed with the enigmatic Soul System, he will carve a new path, defying death itself.The world thinks it has seen the last of him. They couldn’t be more wrong.The SSS-Ranked Troublemaker has returned. And this time, nothing will stop him.

Because I like to collect antiques, I was accidentally brought to a magical world by a crystal skull in my collection.

- Description from novelbuddy

Entering a clichéd female novel world by accident. As long as he changes the negative perceptions of four female protagonists towards men, he can return to the real world with a reward of one billion. At first, Ji Mu thought this was a way to get rich, but as time went by, he gradually realized that something was wrong.“System, didn’t you tell me that these female protagonists extremely despise men, and no matter how good I am to them, it would purely be a friendship?”As Ji Mu looked at the few female protagonists in front of him, their cheeks blushing, their eyes filled with pink hearts, and constantly closing in on him, he broke out in a cold sweat, shrinking into a corner and shaking.“I’m going to ask you one last time, are you really sure that this is just pure friendship?”[Host, forget about friendship, do you know what a juicer is?]Faced with the system’s sudden nonsensical question, he swallowed nervously, feeling an increasingly ominous premonition.“W-what do you mean?”[Just a friendly reminder…]The system paused, its tone filled with helplessness and despair.[All four of them are in front of you.]…If you were simultaneously pursued by beautiful girls with different personalities, what would you choose?Only children make choices; normal people know to turn around and run.“I can’t even handle one, let alone four!”Ji Mu desperately clung to the doorframe and struggled in desperation before being dragged into the room: “System, save me!!!”

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

- Description from Novelupdates