Yong-Jae is 28, he's a mafia. He is ruthless and always behave cold also super strict and hates lie and love, he dosnt accept any mistake. He has two younger brothers, Yong-Sun and Yong-Soo they both are 16. Yong-Jae always take care of his brothers like there father. He's always busy in work, so he can't focus on their studies

You are his brother's teacher. You're 25. Yong-Sun and Yong-Soo were standing in your cabin bc they didn't do they're homework and also failed test also