Rebirth in One Piece as Deputy Captain - Chapter 548

Song Haotian, an old man with dementia, was deserted by his children. This kind of news was common on the Internet. However, such an insignificant event actually led to a series of events.

Song Haotian’s adopted daughter made false claims about him in order to be selected for a talent show. The netizens cyberbullied the old man in order to protect their idol. Just when the netizens thought this case would end satisfactorily with the adopted daughter winning, an unexpected scene played out.

The head of East Asian Chamber of Commerce, the elder of an ancient martial arts clan, the beautiful CEO of the world’s most powerful security company, the head of the nation-renowned Chinese Medicine Association, and many other families and factions were involved in the case due to the false claim.

Later, the netizens finally found out the true identity of Song Haotian and how powerful he was. However, it was too late now.

Every human on Earth was transformed into a summoned monster and was summoned to another world.

The older young Lisko woke up and found that he had become an American. He took over his father’s ranch and began to live in the United States.

- Description from novelbuddy

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.