System Bestows me with Immortality, Living on to Eventually Become Invincible - Chapter 1 – Longevity for eternity, start adding a little

Kim Bo Myung, after graduating from high school years ago was living a below average life as an employee of an entertainment agencies PR department.After getting run over he opened his eyes to see that he was back in the past in the body of a member of an idol group?!He gets a chance to regain his lost dreams and write a new legend in the entertainment world and also get revenge !

Gods and demons are everywhere in the Grand Desolate World.

This is a story about a legend, of one that can never be forgotten.
Summer, first time down the mountains in 16 years, after being raised by his 3 masters and Fairy sister.

‘Why won’t you follow the Rules of society?’ The rules are the tool made by the strong, so I follow my own rules.

‘Why won’t you just use your brain instead of your brawn?’ Idiot! Have you ever seen anyone use their brain, to get back at an ant that bites them!? No, they just casually step on it.

‘Oh, everyone says you’re a first-class beauty huh?’ well, I’m sorry but even you are not qualified to be my wife. Only a ‘Summer class beauty’ is worthy enough!

‘My enemy is sick?’ Oh, don’t worry, even if you’re on your last breath and I feel it’s beneath me to slap shot you dead. I’ll just fix you up and then beat you!

‘Who am I?’

“I am Summer in the spring, the autumn, and the winter, I’m the world’s first above the heavens!”

Follow me, Summer Day as I step by step become known as the world’s first master, the world’s first doctor, the world’s richest man…… a lot of other world’s number one, but most importantly, The worlds happiest man.

- Description from Novelupdates

Yu Su is making a comeback with her system! Yu Su didn't grow up with her family. At age four, her older brother lost her while they were out and about. Her family adopted a girl close to her age and even gave her Yu Su's name.Many years later, Yu Su's family found her. However, nobody in the family treated her better because they felt guilty. On the contrary, they pampered the adopted child even more. If Yu Su and her adopted sister ever set their sights on something at the same time, their family would let her sister have it.Yu Su relied on her own hard work to succeed in showbiz. Not only did her family not show her any support, they even tried to interfere with his career. They claimed to want to look after her, but they gave all their resources to her adopted sister.In her previous life, Yu Su craved familial love and tolerated endless bullying from her family. However, in the end, when she and her adopted sister were kidnapped, everyone, including her family and the boyfriend she grew up with, chose to rescue her adopted sister first. In the end, Yu Su was killed by her kidnappers.After reincarnating, Yu Su decided to cut off all ties with her family. To survive, she ventured into showbiz!Later...Was her eldest brother a dominant CEO in showbiz? In the blink of an eye, Yu Su's studio became the top-performing company in the industry!Was her second brother a successful manager? Yu Su became the ace of all managers in showbiz!Was her third brother a famous and talented singer? Yu Su went viral with a single song!Was her fourth brother a genius director? Yu Su's film sold so well that even he became envious!After seeing Yu Su's success, her biological parents and brothers regretted their actions. They begged her for forgiveness.“I refuse!” Yu Su exclaimed.