MTL - Doctor’s Life Simulator - Chapter 168 Qin Lang, you are too cautious.

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

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

Gao Yang was an orphan who, at the age of six, crossed over to a “parallel world” and began living in a warm family of five.When he turned eighteen, Gao Yang accidentally discovered the truth about this world: it wasn't a parallel world at all, but a mysterious realm, and the loved ones and friends around him were all terrifying “Monsters”!Gao Yang, upon uncovering this truth, narrowly escaped death and, at a crucial moment, gained a system called “Luck” .The longer he survived, the stronger he became! And so, a deadly game of sheep and wolves unfolded...

Liu Fang, a manager, died suddenly at work due to being too diligent.
She thought that she would turn into a wisp of dust and dissipate after her death, but she never imagined that – the new century, the new underworld, even if she became a soul, she would still be a worker!

Liu Fang has become a newcomer to the underworld Quick transmigration Department. In order to wait for a good reincarnation, she strived to accumulate merit and traveled into one world after another to repair the way of heaven.

- Description from Novelupdates