MTL - The Troubleshooting Diary at Hogwarts - Chapter 52 Sunny on February 14 (Part 1)

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

An unnamed 34-year-old Japanese NEET is evicted from his home following his parents' death.

Upon some self-introspection, he concludes that his life was ultimately pointless.

Walking down a street he intercepts a speeding truck heading towards a group of teenagers, in an attempt to do something meaningful for once in his life he manages to pull one of them out of harm's way before getting himself in the way of the truck and dying.

Awakening in a baby's body, he realizes he has been reincarnated in a world of sword and sorcery.

He resolves to become successful in his new life, discarding his past identity for his new life as Rudeus Greyrat.

A thousand years ago, the Great Calamity struck Earth. Countless rifts tore through reality, opening portals between the Demon Realm and the Human World. Overrun by monsters, humanity was on the brink of extinction. But at its darkest hour, something miraculous happened—those who died returned, awakening strange new powers that allowed them to fight back.Vale knew that story well. Maybe that's why he wasn't surprised when he heard the voice of the system speak to him.[ Congratulations! You have died. ][ Your First Trial of Death begins now. ]What truly shocked him, however, was the question burning in his mind:“Who would dare to assassinate the Second Prince of Verythmia?”

Baifeng had signed in Naruto World for three years and reached the sixth level, just when he thought he could finally be salted fish, kick the dance king, and punch Kaguya.

Ding, you have been selected and invited by the Tiantian dimension chat group, do you want to join?

No, no, I’m already at level 6, so I just came to the chat group.

The beautiful monster princess: Although I lost a good chicken, the monster girl is really good.

Dagu is not Dagu: As a partner of justice, it is our duty to maintain the peace of the universe.

I’m your father: Kulala, I’ll show you a hand-torn black beard to cheer you up.

Bai Feng: This chat group is a bit indecent.

- Description from novelbuddy