MTL - The Day I Checked In In the City - Chapter 1 system?

A world where God will grant abilities called Skills to those who come of age. The protagonist, bestowed with two skills, uses them and rises to an existence called a hero.

In the new era of Blue Star Martial Arts, Demons invaded, and humankind was embroiled in a bitter struggles.Chu Feng transmigrated and arrived on the scene. Armed with the ways of being an overachiever, all he wanted was to once again show the spirit of a die-hard corporate slave and carve out his own piece of the world!No sooner had he been reborn than he was smeared with demons all over his face, but no worries, his golden finger had arrived!He could draw upon the Life Force of slain Demons to transform into Attribute Points, becoming stronger with limitless additions!“What to do when there are no more Attribute Points available?”“Hey, look over there, a lone Demon…”“Sneak up from behind, grab its head, just twist like this! Hey, Attribute Points secured!”…“In this world, having great strength means having everything!”“In my life, with such heaven-defying Martial Arts Talent, do you think I can become a Martial God?”“The path to the Martial God has ended; it's become nothing but old legends? Ha, the path I walk will be the new path of the Martial God!”…This book is also known as “Demons, I Need You to Help Me Cultivate!” “So Easy to Learn, I Think This Move is Really Simple” “Run Fast, the people at the front are haunted” “This Man is More Demonic Than the Demons Themselves!”

“I want to be a true demon.”

A boy not older than 20 years wished as he looked at the sky.

After suffering from the trauma for many years, he finally gave up on life.

People called him ugly, demon, and hideous.

He bared with it, but today he finally broke.

With a piercing pain in his chest, he died.

When opened his eyes, Logan found himself in another world and inside the body of a demon.

His wish was granted, but at what cost?

He had no power and was the lowest among the demons.

No one to help, no one to be with him.

But it did not affect Logan. Because he had something else with him.

‘Sin and Virtue System.’

Guiding him towards his goal to become a true Demon.

Logan’s conquest has begun, so be a part of it.

Otherwise, you will miss him.

The true Demon!

However, is the MC the 'only' one to have a system?

Hm?

Read the fucking novel and find out!

Once again, Ye Zhen Zhen had lost her memories. When she opened her eyes once more, arranged in front of her were——

1. A Maternal Grandfather, the Murdered Victim

2. A Large Inheritance

3. A Deeply in Love Fiancé

4. An Overbearing Maternal Uncle and his Wife

5. A Docile Servant

6. The Aloof, Cold, Abstinent Doctor in Charge of the Case

7. A Seemingly Difficult Police Officer

Reincarnated as a detective, Ye Zhen Zhen stared dubiously at them all. Who was the murderer? Was it her? It…?

Only one was the real murderer, but there was far more than just one culprit.

- Description from Novelupdates