MTL - Imperfections - Chapter 165 Seems to be a launcher

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

He was an orphan with mediocre aptitude and a humble background.Through perseverance and an unwillingness to settle for mediocrity, he practiced cultivation desperately.By a stroke of luck, he awakened the Ancient Martial Soul, long extinct in this world, and from that moment on, his rise was unstoppable, like a comet soaring high, embarking on a cultivation journey to dominate the world.Starting as a beggar who was bullied by others, he began to shine with each step, entering into an era of chaos where Sects are numerous, talents abound, the Ten Thousand Clans vie for power, and human heroes emerge one after another in a vast and magnificent world.With the 'Tyrant Sky Martial Soul', he vowed to forge his own myth!

Ruan Tian is a cat which gained sentience, and is infatuated with the goddess who once saved him. During the college class reunion, Ruan Tian once again confessed to her, but she openly proclaimed that she would only marry Qin Li and no one else.

Qin Li was Ruan Tian’s number one enemy and love rival, and he was born to put Ruan Tian down for a hundred years!

Ruan Tian looked at him furiously. “Let’s battle! Only one of us can remain!”

Qin Li: ▼_▼ Shall we get on the bed?

- Description from Novelupdates

The world had changed when the System arrived, alongside the Cataclysm that filled the world with monsters. The technology was gone, replaced by classes and skills that allowed the people to fight back. When Devon ended up as a Blacksmith, a class that didn’t grant Intelligence, he had to face the reality, that his old career that he loved - mathematical sociologist - was over. Instead, he had ended up as yet another discarded member of the production class, overshadowed by the existence of the System Shops to the point of total marginalization. But, what if all he needed was to reapply his scientific thinking to the System...