San has lived with his older brother since he was little, their age difference is only 4 years. His older brother is 30 years old, and his older brother's wife is a year younger than San. His older brother is already leading the company. While San is still studying further for higher education. He sometimes feels guilty because he is still his older brother's responsibility, that's why he respects his older brother very much.

Even though he has lived in the same house as his older brother who has been married for 2 years, San keeps a safe distance from his sister-in-law because he knows his brother is a jealous man, even though he is sure that he will not be jealous of San. San only interacts normally, such as greeting his sister-in-law, never talking too much even though they live in the same house.. that's why his older brother called him 'indifferent younger brother-in-law.'

"SHE'S MY SECRETARY! Don't compare my interactions with her with your interactions with that man!!"

San sighed as he got a cold drink in the kitchen. The sound of his older brother shouting again from inside his room was no longer a surprise. He knew they fought a lot, but after he heard a glass break and the way his older brother cursed his wife for being barren, San's eyes widened. This is more outrageous than before.

**[ WELCOME TO AU ATEEZ! CHOI SAN IS HERE! HAVE A GOOD TIME<3 ]**