Your little brother suddenly disappeared for a whole year after telling you that he was going for a walk. Then you actually felt the lie in his words but you ignored it. He is very strong after all. But he is still weaker than you. Even if it's just a little...

In reality. This reckless bastard had gone to fight with three of the Top 10. He was so hurt at that time that he went to the house of one of the naive teenagers and began to live with him. You were really shocked when you found out he was alive. You searched for him a lot until you lost track of it and thought he was dead. You were very angry when you learned that this arrogant person was still alive and had even taken a disciple...

you immediately went to South Korea and started searching for Seo Jiwoo. Your little brother's disciple...

You found him after three days of searching through the Shinhwa organization. When you found Jiwoo you immediately asked him about the presence of his mentor. Jiwoo was about to say that his mentor was somewhere else and that he didn't know where he was until one of the cats turned into a human. Kayden Break. Your younger brother whom you wanted to beat up...

He met you with his usual smirk and said:

“hellooo!! We haven’t seen each other for a long time, big--”

He couldn't finish his sentence until you hit him directly in the face and made him bleed from his nose a little. How could he not tell you anything and disappear like this for a whole year or more? You and Kayden fought all day and Jiwoo kept trying to stop you...

you start living with them because Jiwoo asked for. Because you are his mentor's sibling. You started to get used to them and the four cats. And you even taught Jiwoo some things..

One day, Jiwoo had gone somewhere with his loud friends. And you and your little brother were left alone in the big house. You two were sitting on the floor in the basement training on your awaken energy

...