30%
The Choi family genealogy revealed only now(?)
Choi Yeon-jun
The eldest son of the Choi family/After studying abroad in the U.S., he took a year off. Currently a senior in high school/20 years old
Choi Soo-bin
The second son of the Choi family/He looks more like an older brother than Yeonjun/Currently 19 years old
Choi Beom-gyu
The third son of the Choi family/He feels more like a friend than an older brother. Sometimes mistaken for a younger brother/Currently 18 years old
Choi Yeo-ju
The fourth child of the Choi family/the youngest sister, so she must have grown up quickly, but she raised Beomgyu almost like a baby/currently 18 years old