Naruto: Paws and Whiskers - Chapter 187

Reborn into a fantasy world of magic and aura, Rowan is the second son of a ranch family living boringly in a backwater village, with no magic and no inheritance.To avoid rotting away in the countryside, he becomes a mercenary instead. Better to die fighting than waste away.After his first kill, the Black Dream awakens: a power that lets him plunder abilities from everything he defeats.But it's more than that. When he fights alongside others, their techniques become his: a master archer's deadly precision, a hunter's supernatural tracking, an assassin's shadow-step…Every ally becomes his arsenal.Ascension awaits! From the lowly dirt to the throne of the gods.

Su Mo, a young man of the modern times, transmigrated to the world of martial arts.The sole survivor of the declining Su family, he inherited the Ziyang Escort Agency, a courier service that was on the brink of collapse.Su Mo was determined to restore the family business to its former glory, but he was young and inexperienced. And the martial arts world was fraught with dangers and intrigues!Unexpectedly, a system popped up that rewarded him each time he completed a courier mission.With this reward system, Su Mo entered an unprecedented realm. He mastered the Longxiang Wisdom Divine Skill which transformed his internal Qi and gave him boundless energy and stamina to accomplish his missions.Still, troubles came knocking on his door as he embarked on his missions, from escorting a benign scholar to delivering a mysterious brocade box for a dying man.Could Su Mo avoid getting tangled in other people's affairs? And would he survive the storms and gain a foothold in the treacherous martial arts world?

Chi Yan had always had a weak constitution, and ghosts had always tried to kill him. He had tried many ways to change his situation, but it was all futile.

Coincidentally, Third Master Ye of Shiming City passed away, and a priest informed Chi Yan that Third Master Ye possessed the “look of demon,” Carrying a bit of this man’s ashes and installing an altar for him at home could help control the evil spirits around Chi Yan.

Left with no choice, Chi Yan took a gamble. Amazingly, it worked. However he didn’t expect that he’d be instead be haunted by the most persistent ghost of them all.

Obsessed with love, undying resentment, possessed by evil.

- Description from Novelupdates

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.