Dawn of a New Rome - Chapter 51: The Narrow Sea

Awakening a Legendary Class in the apocalypse...?Not even in his wildest reams Xavier could have imagined things would take turn for the better.Xavier was rotting in some corner of federal prison, destined to live a miserable life.However everything changed, when the apoclypse arrived. While the world around him burned, Xavier awakened a class, that rewarded him for killing monsters in one strike...for creating kill streaks!![Ding! Hundred monster Successfully executed, All Attributes increased by 100%]While others were struggling kill basic Zombie, He killed the god of apocalypse in one hit.[kill streak - One million][All of hosts attributes are increased by a million times.]With this prompt, Xavier ended the crisis that had been plauging the galaxy for millions of years.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

I met the male lead in prison.

The main character Lei Yu does not have the ability to practice his family’s martial arts. He gets stepped on and tossed around. Due to certain reasons, he leaves the family, coincidentally gains an ability, and makes his own path to becoming an immortal.