A Guide for Background Characters to Survive in a Manga - Chapter 31

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Then placed into a high-school setting, Lin Yi is tasked by the chairman of a top-tier multi-billion company with bodyguard duty for non-other than his own daughter, a certain little Miss of said high-school.

His enemies, once ranging from drug lords, mafia bosses, political figures, and national leaders, are soon replaced with spoiled kids who happen to have rich papas and mamas, and Lin Yi finds his intense expertise and high-threat skillset misused, and very underwhelmed…

But he does get a harem cast as diverse as his old enemies, so Lin Yi decides that, for the sake of messing around with girls as an invincible entity in a down-leveled environment, leaving his bloody and death-filled war days behind is something he’d definitely want to strive for.

- Description from Novelupdates

Forty years ago, demons invaded the eastern continent. Coming from another realm, they hunted the humans, and people soon began to wage war with them. Before long, there were those among the humans who inherited the demons' abilities.Demon hunters are currently the most in-demand profession. Although the chance of dying during a raid was high, the hunters were mostly popular among the common people. If you have some demon blood in your body, then the path to the Hunter's Association is open to you.Year 2066, Seoul. The territory of the former city is divided into three parts. Green Zone, Orange Zone and Red Dangerous Zone. Although mostly ordinary people and workers lived in the green zone, there was a chance for demons to get into it. That's why demon hunters patrol the whole area, sacrificing themselves for the lives of people.The main character, Lee Ki-hyun, inherited 50% demon blood and became the world's first SSS-ranked demon hunter. He will have to go through the path of a demon and learn the truth about his parents to save humanity.

Su Li, an ordinary person who lived for 30 years, surviving on social welfare as a laid-back slacker.Occasional pointless complaining and self-defeating philosophical platitudes didn’t bring any meaning to his 30 years.Until he was transported to another world…Su Li, who had no elemental talent, Su Li, who was labeled as useless, lived an unremarkable life.One day, Su Li picked up a person in distress and told them: “The reason you think light is important is only because darkness pervades the world. When light fills the world, darkness will become important.”The Son of Light Saint who was betrayed by the Bishop of Light— He’s right!He is the sage who guides people forward, the signpost standing before the people, my faith, my everything!He is not a god, yet he far transcends gods.Su Li saved an injured mute bird. As birds sang outside the window, he told the bird: “The reason people like things that make beautiful sounds is only because they happen to understand that sound. Because of ignorance, there is no sin.”The Level 9 demon beast Raven, severely injured by the Mercenary Association:— All people are ignorant and foolish, thinking that ravens represent evil, even labeling me as a natural disaster. I hate humans the most, but he is the exception.If the world is what he wants, I too will aspire towards it.Su Li told his young friend who wanted to go to the big city to strive for success: “Moving upward is human instinct. If one day you fall due to reality, please don’t hate yourself.”The friend who eventually amassed enough gold coins to fill a city:I once thought that a child from a remote countryside would never understand everything I pursued. However, heaven blessed me, allowing me to witness true great wisdom…

Hua Baihe is an emotional mediator, relying on his own mouth to persuade many pairs of broken pots that deserve to be together.
until selected by the emotion system.

before crossing.
She vowed to slap the small flat chest with a bang: “As long as there is a reward, there are no couples that I can’t persuade!”
System: “Do well, little girl.”

After crossing.
Hua Baihe looked at the man above him with a look of horror: “…No, this really won’t work for me!”
The system prompts: “The host is not allowed to fall in love with the target character.”

The man’s kiss fell.
Hua Baihe: “The system, listen to me, I was forced, and you asked me to do it.”
System: “…” I didn’t let you be the protagonist!

Edible instructions:
1. Decline to pick up the list! ! ! !
2. Easy and mindless bullshit, attack and accept are decided by the first time.
3. The CP in this article is always the same person, and all CPs are willing to be together! Occasionally a little fun! Don’t take it seriously!
4. I can accept only watching the first two worlds and complaining about another heroine, but I suggest to keep reading. The author does not write brainless logic. Of course, I suggest that I can’t stand the upper right corner. Generally speaking, I accept peaceful discussions, but scold me. I’ll kill you, I hope you know.

- Description from novelbuddy