Takarakuji de 40-oku Atattandakedo Isekai ni Ijuu Suru - Chapter 3

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

He is the strongest soldier of the Chinese Special Forces, and the ultimate demon in the eyes of the enemy. Now he is disarmed and returned to the fields, returning to agriculture and forestry, hiding in remote mountain villages and enjoying a peaceful life.

However, gold always shines, pure white and rich beauty wants to marry him, the president of Meiyan wants him to be his lover, and the hot police flower always wants to take him as his own, which makes the village chief very headache.

This is the life story of a young village chief with a stunt, soaking in the most beautiful beauties, drinking the strongest wine, and vigouring Niucha’s life.

- Description from novelbuddy

I want an S-Rank skill too! I want it so badly, I could die for it!