After Becoming a Solo Player, My Unlimited Skills Made Me Invincible - Chapter 181 - : Tears of Time, Tears of Fire

A fluffy, sweet modern GL story about a mature older women and a cute university student.

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

Empires rise and fall on the Yulan Continent. Saints, immortal beings of unimaginable power, battle using spells and swords, leaving swathes of destruction in their wake. Magical beasts rule the mountains, where the brave – or the foolish – go to test their strength. Even the mighty can fall, feasted on by those stronger. The strong live like royalty; the weak strive to survive another day.

This is the world which Linley is born into. Raised in the small town of Wushan, Linley is a scion of the Baruch clan, the clan of the once-legendary Dragonblood Warriors. Their fame once shook the world, but the clan is now so decrepit that even the heirlooms of the clan have been sold off. Tasked with reclaiming the lost glory of his clan, Linley will go through countless trials and tribulations, making powerful friends but also deadly enemies.

Come witness a new legend in the making. The legend of Linley Baruch!