I Can Accumulate Proficiency, Starting from Alchemy - Chapter 77 - : A Kill

Every little girl's fantasy is to live a wonderful life full of riches and luxuries. This was the future she imagined, and she was willing to go to any length to obtain it.She was spoiled, pampered, and doted on by her family, and she was proud of herself. She knew she deserved the best, and she went for it. This, however, is where the nightmare began.Wanting to leave the clutches of poverty wasn't as simple as she believed, given the things she had to give up, the humiliation she had to endure, and the numerous things she had to lose. It was not worthwhile.When she thought she had it all, she was slapped in the face with the cold, hard truth: she was only a SUBSTITUTE.And when two of her closest companions turned on her and betrayed her, she was shoved aside and got humiliated by people she used to know.With nothing and no one to lean on, she was forced to make decisions. Decisions that gradually resulted in something breathtakingly amazing.[DING! SIGN IN! THE HOST HAS BEEN REWARDED WITH ******]

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

{Ding! You've seduced the Ice queen}{Reward: you've earned 10× her net worth: $20M}{Multiple orgasm!}{Extra reward: $10M}As if losing everything wasn’t enough—his job, his pride, and his life, all stolen in a single day. First came betrayal. Then came Truck-Kun.Caleb Monrrow thought it was the end.Until he woke up in another world.Now reborn as the bastard son of a ruthless business tycoon, Caleb enters a life where his name is ignored, his worth dismissed, and his powerful siblings want him erased.He has one mission:Rise above them all and claim the legacy that should’ve never been his.But then…{Ding!}[10X Rebate System Activated]Seduce and conquer all female Cardholders. Receive 10X their wealth.“Getting rich while having fun? Sounds like the perfect deal.”Or so he thought.What the system didn’t say was that every Cardholder is linked to Group X—a shadowy organization that controls wealth, media, and power from the shadows.Each cardholder is powerful, seductive… and hunted.Rival Cardholders, deadly assassins, and secret alliances threaten to unravel everything.And now Caleb is in the middle of it all—with his life, heart, and future on the line.“Wait… the system never mentioned this!”In a game of lust, betrayal, and survival, Caleb must seduce, outsmart, and endure—because in this world, love is a weapon... and wealth is war.

Never had the Radcliffe family expected their son-in-law, a loser in their eyes, to be the hidden Dragon Lord who had lived for myriads of years...