Paladin of the Dead God - Chapter 10:

As a salted fish, Yun Su, who never pays in games and always relies on prostitutes to fight Shenhao players, wrote down his 20th birthday wish on a notebook with trembling hands: immortality.

When I woke up, my dream came true, but I almost cried. Is the world of cultivation so cold?

- Description from novelbuddy

“I’ll clear your mother’s debt entirely. In return, you’ll marry me.”“Are you out of your mind? Do you really think I’d agree to such an absurd proposal?”“Possibly. But it’s a mutually beneficial arrangement. You keep your shop, and I get what I need.”“And what exactly is it that you need?”“That’s none of your concern. All you need to know is that this deal benefits both of us.”Two years ago, Lunara entered a marriage she never wanted. Desperate to save her mother’s flower shop, she was cornered by Eryx, a man with a hidden agenda. With no other choice, she agreed, and found herself bound to him in a transaction of convenience—he needed something from her, and she needed him to prevent her world from falling apart.But after the papers were signed, he disappeared without a word, leaving her with nothing but unanswered questions and lingering bitterness.Now, fate has thrown them together once more but with a cruel twist, Eryx doesn’t remember her at all.Lunara believes she’s long since moved on. But when she sees him again, a stranger who has no recollection of their past, old wounds resurface. What was the truth behind their marriage? And why, despite the resentment, does her heart still stir when he’s near?

The genius cultivator Lin Xuanzhi didn’t let down the world in his past life, yet he only betrayed a single Yan Tianhen.

It was only when he had been backstabbed and killed by his closest friends, teacher and fellow disciples that he knew what kind of unforgivable crimes he had committed.

After he gained the huge opportunity for rebirth, the Lin Xuanzhi who had climbed back up from hell swore to cherish the person that he had betrayed in his past life.

- Description from novelupdates

The protagonist, having degenerated into a “loser” after being unable to find employment, gets caught up in someone else’s attempt to commit suicide-by-train and ends up traveling to another world. The numerous cheat powers he demands from God are all granted to him. But contrary to expectations, these powers bring about disastrous consequences for the protagonist.

Having reincarnated into another world, the optimistic protagonist (Yuuri) starts his(her) heart-warming training days with his(her) teacher.