In a Different World with a Smartphone - Chapter 336 - : [Black Cats], and [Red Cats].

She was forced by her husband and his mistress to jump into the sea and commit suicide, only to be rescued and taken care of by the jerk's uncle for seven 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

[An explosive and thrilling story, highly recommended by the Chief Editor himself. A must-read divine book, you’ll regret not reading this.]In the eyes of others, he might have seemed like a worthless fool, but he was revered as the master of appraisal, the miraculous healer, the charming sorcerer, the lord of the Dragon Palace, the invincible war god… With a hand that wielded golden needles against death itself, and another that brandished a longsword, compelling nations to submit, he possessed unparalleled prowess. His divine gaze surveyed the heavens and the earth, while his demonic sight pierced through the veils of yin and yang. He was unmatched in all the world!

Shadow was an assassin with no family, no friends, and no purpose beyond the missions assigned to him. Kidnapped at the age of five and forced to serve a ruthless assassin organization for fifty long years, his life was a series of shadows and bloodshed. On the eve of his fifty-fifth birthday, he completed his final mission with hope in his heart. A hope that freedom and a better life were finally within reach.But that hope was shattered. Betrayed by the very organization he had devoted his life to, Shadow was ruthlessly killed, his decades of loyalty repaid with treachery. As his life slipped away, he swore one thing.“If he had a second chance, he would live life on his terms, unshackled and free”.In the void between life and death, Shadow's soul was met by “Syl”. The enigmatic Shadow Monarch's System. Syl offered him what he craved most. Another chance at life, but in a world far different from his own. Without hesitation, Shadow accepted, eager to grasp the life he was denied.Reborn into a realm of gods, magic, and chaos, Shadow soon learns the truth.He is a Wild Card, a pawn in the gods’ celestial game. Amere source of entertainment for their whims. But Shadow is no ordinary human. With the sarcastic and unpredictable Syl by his side, a glitching system that grants him powers beyond imagination, he embarks on a journey to defy the gods and forge his destiny.