Risou no Himo Seikatsu - Volume 2 Chapter 3

He reincarnated into a hunter world and became an underwater hunter.There were only 20 people in the entire country in this minor profession, but it didn’t matter. He liked the sea.“Crazy! There’s a real artifact?!”“Ahahaha!! How much is all this worth!!”But then, the Great Diving Era began.“Ah, it’s so beautiful… I want to see more, more…”“W-What is that!! Save me!!!”“Aaaargh!!! My head!! It feels like my head is going to explode!!”…It would be better not to go in there.

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

After being reborn she worked hard to stalk and marry her husband, abuse and punish her other scumbag husband, and embark on a journey to reach the pinnacle of life!

—

For the egregious crime of treason everyone in the Xiao House were sentenced to death.

At the execution grounds while waiting for her beheading, she stared at the youth sprawled on the ground in front of her. He had run over so hurriedly he tripped over his own feet, displaying an undignified sight. It made her smile thinking how stupid this person was. She had completely used and taken advantage of him from the day he forced her to marry him. Yet despite all the abuse she heaped on him, he still wanted to save her.

She opened her eyes again only to find it was the day before their wedding. That devious scoundrel… to make her his wife through underhanded methods… The memory of it still left a bad taste in her mouth.

She was going to grab this second chance and live it up! Extort all debts owed to her! Buff herself up and shine like a diamond!

But how was she to know that the husband she once hated was actually really loyal and gentle, soft and easy, and so incredibly sweet and delicious to eat! The shutters that blinded her eyes in the previous life were cast aside. She realized she didn’t know how to cherish the good things in life. So in this new one she was going to make sure to pamper and spoil the hell out of that husband of hers.

- Description from Novelupdates

Burdened by the crushing debt of his parents, Lex never imagined a life beyond endless work and grief. But fate had other plans.One fateful day, an accident ends his mundane existence—only to thrust him into a world of fantasy. Reincarnated as a side character doomed to fail, Lex now inhabits the body of a so-called teacher—a fraud with no real skills, destined for disgrace.Standing at a crossroads, he faces a choice: follow the canon and flee from his inevitable downfall, or defy fate and carve his own path.Just as he considers running… a voice calls out.[Need some help?]Grasping the talent that his predecessor never realized he had, Adrian decided to defy his fate and become a true Runesmith.However, he never expected that once he would start on the path of becoming a Runesmith, he would start gaining so many connections.[Ding!][Cross-dimension group chat has been activated!][Hero of World Nebula: Old man, when can I get my sword done?][The untamed witch: When will you help me with my staff?][The obsessed one: Darling, when will you do me-I mean, when will you do something about my blades?]....what the heck is all this?°°°°°°°°°A/N:- Read the first few chapters, before deciding to drop it.English won't be perfect, but it will be readable.Additional tags: Cross-world group chat, possessive characters, sudden strength gain, overpowered MC, broken engagement.