Maknae's Baby Brother ( A BTOB Fanfic ) [Season 1&2]

I'm Yook Jaesung... Just switch the syllables of my name and it's Yook Sungjae... I'm his younger brother. We're three kids in the family, our eldest sister, SUngja and me... I'm closer with Sungjae. I've been with him since Cube Auditions... To Training until now that he debuted.. Read my misadventures as the baby...