The Supreme Level Up System - Chapter 205 Hurrying Up.

Three Days of Happiness is a novel by Sugaru Miaki, also known as Fafoo. It’s a rewritten version of the story originally posted to 2ch.

The premise of the story revolves around a shop where one can sell away the remaining years of their life, and the consequences of doing so.

“I Say A Little Prayer” is a short related story which was posted along with the novel’s release. It spoils some things about the main story, but nothing major.

Identity background: Fifteen years old, biological mother died, father unknown, holding a large legacy, poor performance in entrance examination, please choose a guardian.
↓
Candidate one: birth mother’s brother, not close, but eloquent, very gentle, reliable and sincere.
Option two: The eldest son of the father who has never been seen. His occupation is unknown. His age is unknown. Nothing is known.
In the last life, Yu Shulin chose his uncle, his mother’s funeral was all done by him, and he promised to take good care of him.
The selection is completed, and the result is being read …
After the choice was made, open the [pit you pit you pit you till you die] ending, please accept.
Yu Shulin, who was counted by his uncle’s family for his inheritance, was eventually released from prison, but immediately got killed …
@ # ￥% & * …… Restore the file.
Identity background: Fifteen years old, biological mother died, father unknown, holding a large legacy, poor performance in entrance examination, please choose a guardian
↓
Candidate one: birth mother’s brother, not close, but eloquent, very gentle, reliable and sincere.
Option two: The eldest son of the father who has never been seen. His occupation is unknown. His age is unknown. Nothing is known.
After the rebirth, Yu Shulin, whose negative energy exploded, said to hell and chose option 2!
The selection is completed, and the result is being read …
After reading the results, open the ending of [Just want to love you with the overbearing film emperor], please accept.
Yu Shulin, who was captive and was boiled like a frog in warm water: (╯ ‵ □ ′) ╯︵┻─┻WTF!

- Description from Novelupdates

His name was Brayden Neal, and he was an ordinary citizen. At eighteen years old, he was bestowed the title of a king!

After ten years of fighting in the northern borders outside the kingdom, he finally returned home. He swore to kill three people the moment he arrived at the capital…

Life is unpredictable. Her husband loved her stepsister, deposed her as Empress and even forced her son to death. In that Cold Palace, she was forced to drink poisonous wine. So in the next lifetime, she made a promise to never do good deeds and help others, to never step into the palace and to never become the Empress!

At the Prime Minister’s estate, the mistress’ daughter is reborn into a she-devil.

An evil stepmother? I will make sure you go to Hell!

A two-faced, hypocritical older stepsister? I will rip apart that beautiful façade!

A scheming younger stepsister? I will throw you into the grave!

You guys didn’t let me live peacefully so you should also expect the same!

Initially she wanted to stay away from disaster as far as possible; however, a man’s heart is like a needle in the sea—impossible to search for, impossible to understand.

The man who once swore to abandon her became someone who can’t live without her.

The enemy from the past lifetime suddenly confesses his feelings for her.

Even worse, she is bothered by a handsome man with a thick-skin who doesn’t know how to give up!

- Description from Novelupdates