I Became the First Prince: Legend of Sword's Song - 217 217. 64. Empty But Full (2)

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’ve reincarnated as the reverse harem game’s villainess, the one and only step-daughter of the Eckart duke family.

Ark is a young Swedish man. Growing up without the loving care of parents had a big impact on his life and his personality turned out rather cold, even though he is a good person. His life ends abruptly when he suddenly dies of a rare disease, but his story doesn't. In fact, he gets reincarnated in a world of swords and magic... as a wolf? Follow Ark as he tries his hardest to evolve and survive in this new world fraught with danger, after all, power is everything.

“The world’s not fair, but fairness doesn’t pay the bills. You don’t wait for a handout — you build your own damn ladder, one step at a time.”Ethan Grey’s life was built on ambition, hard work, and hope — until a single accusation destroyed it all.Framed by his ruthless boss, Ethan loses his job, his reputation, and is left drowning in half a million dollars of debt.Cast aside by a society that thrives on crushing the weak, he’s at rock bottom with no way out.But in his darkest moment, something extraordinary happens. A mysterious system awakens, offering Ethan a second chance — but with rules.[Congratulations, You have awakened the Harem Investment System]It can’t make him rich overnight, and it won’t give him shortcuts. Instead, it points him toward physical investments: crumbling properties, broken-down machines, and forgotten treasures.Each one is a gamble, but with every success, the system rewards him with newfound skills and opportunities.