Fugitive Poison User ~I Am Somehow Recovering in a World Full of Miasma~ - Chapter 28

A chance to change, to challenge destiny, making dreams a reality, and live a legend! A regular man gains a system that allows him to turn into a fish!

- Description from Novelupdates

Su Mian, the forgotten bride, has endured three years as ​Fu Tingzhou’s invisible wife—a man so coldly abstinent, he never even glanced at her. Branded a “murderer’s daughter,” she’s spent her life as a human blood bank for the Su family’s pampered heiress, her true worth buried beneath lies.When Tingzhou finally meets his timid wife, he sees only a gold-digging burden. Her quiet devotion? Ignored. Her shattered heart? Dismissed. He hurls divorce papers at her, snarling, “Disappear.”She obeys… and unravels his icy control.Now, the untouchable CEO is on his knees.Her absence ignites a frenzied, scorching obsession. Fu Tingzhou hunts for the wife he never wanted—only to discover her vanishing act hides earth-shattering secrets: ​switched identities, a hidden lineage, and a woman who’s no longer the meek shadow he discarded.

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

He died. Not by fate, not by accident, but as collateral in a hunt between beings beyond mortal comprehension.And yet… death was only the beginning.Chosen by a mysterious entity known only as Echo, a sarcastic soul from Earth is offered a chance at a second life. Gifted with ten draws from a divine treasury, he obtains powerful treasures, a rare bloodline, and a mysterious system known as the Limitless System.But what begins as a straightforward reincarnation takes a twisted turn when two dragon inheritances—Thunder and Fire—collide within him.Reborn not as a man, nor as a beast, but as an unknown species—a fusion of human and two True Dragon Inheritences—he awakens in a scorched battlefield beside a dragon egg, unaware that his birth was witnessed by fate itself.After surviving the near-fatal clash of legacies within him, he emerges anew… no longer Zaroth, but Primus Xal’Zaryon Drakonis, a name that shakes the very fabric of mana around him.With his soul, body, and bloodline perfectly harmonized between human and dragon, Primus sets out into an unfamiliar world ruled by ancient clans, dangerous beasts, and kingdoms teetering on the edge of Eternal War.But power always draws attention—and with the secrets of his origin, the Limitless System at his side, and a destiny marked by a Primordial-level Mark of Fate, enemies will rise from shadows unknown.