MTL - Start with Batman - Chapter 9 Secret Service 9

Step 1: Inherit a creepy old mansion.Step 2: Unlock a cursed system that makes girls fall dangerously in love with you… just by saying “hi.”Step 3: Learn that if you don’t reject them within 10 texts, something terrible happens.My name’s Ren.And apparently, I’m the “Catalyst for Affection-Based Catastrophes.”(Yeah. That’s literally what it said.)My peaceful new life? Over.Now I’m stuck in a house full of magically unstable girls:A sword-swinging elf.A fire mage with zero personal boundaries.A strict class rep who faints if I so much as look at her.And a witch who cursed the bathroom mirror to spy on me.They’re beautiful.They’re powerful.They’re dangerously obsessed.And if I mess this up, someone’s going to get hurt—maybe me.Reject them too late? Game over.Fall for one of them? Even worse.This isn’t a dating sim.It’s survival of the cutest.Welcome to my life. It's not just a harem. It's a hostage situation.

Shaymon, the man who has achieved the apex of dark magic, is framed as being a Demon King and is killed.

Chi Zhao binds with the slag shou system, and if he succeeds in his missions, he will be rewarded.

But who said life is easy!

A rich old man who was slagged by him: “I know you love me. Your past pains, I’ve already investigated them.”

The star admiral who had been slagged by him: “Don’t be reluctant anymore! I’ve always known that you didn’t betray me.”

The entertainment mogul who was slagged by him: “Don’t make any noise. Honey, will you come home with me?”

The dark sentinel who was slagged by him: “Now, do you still want to say that it is not my child?”

The prince regent who was slagged by him said, “The mountains and rivers are yours, but you are mine.”

…

Chi Zhao burst into tears: “Boss, believe me just this once. Let me get the reward, okay?”

Thinking that the acting is very good, in fact, every day he’s spreading meng.

- Description from Novelupdates

The first meeting was at a small bar. A friend nudged his arm, smiling somewhat suggestively: A woman like Daisy Ginger should be kept in a vase, constantly admired, and toyed with at any moment.At that time, she seemed to be drunk and was persuaded by her friend to take to the dance floor and perform a dance.He propped up his face, watching the glamorous woman with casual indifference under the dazzling lights.Daisy Ginger.The name is spicy enough.The figure.Also spicy enough.Banyan City’s young Master Wen, afflicted with a severe illness, was deemed by doctors at birth to not live past the age of thirty. He lived capriciously up to the age of twenty-five, never imagining he’d encounter such a dilemma in his lifetime—if he were to die, what would happen to the little demon at home who creates chaos and mischief without his protection, and ends up bringing harm upon herself when he’s no longer there to shield her?