MTL - Demon Slayer Starts From the Proficiency Panel - Chapter 194 【194】Stone Monument

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Zheng Tan somehow returns to the year 2003, turning into a black cat. Picked up from a rubbish heap by the Jiao family, he is given the name “Charcoal”, and so begins the life inside Professor Jiao’s family. Zheng Tan remembers that he was once a person, but currently his body is that of a cat. He has no way of speaking the human language, but can understand it, and even retains the thinking and IQ of a young 20 year old youth. Read along as he adapts to this new world, and somehow tumbles from a group brawl to catching a thief.

- Description from Novelupdates

It was just a game, one Evan played way too much, but it was still a game in the end. At least it was supposed to be...

However, on the day the main quest ended, he discovered it was more than just a game.

The world of Aidos was real and the demon threat was even more so.

He was sent to be the leader of the new generation heroes and save the world from the demon invasion by the god who made the game.

Unfortunately, nothing was as simple as it may have seemed.

As the truth behind the invasion and the previous Seven Heroes was slowly revealed, he began to have second thoughts about his choices.

He began questioning if the demons were truly the enemies of Aidos.

Even more so, when he discovered a new truth.

That he may not actually be who he thought he was.