Who exactly is Gong Taekwang?

• He's the infamous troublemaker and delinquent in school. 
• He's Lee Eun Bi's protector and best friend. 
• He's known as the 'crazy guy' who's been admitted in a Mental Facility. 
• He is the secret son of the Director of Sekang High School, Yook Jae Ho, and famous actress, Song Hee Young. 
• Above all, he's a broken and misunderstood kid. 

Though, is that all? 

There's more to Gong Taekwang than meets the eye. He's not just some troublesome student who gets himself into trouble every day. What if... what if it's all an act? An act to keep his little secret?

He is Eun Bi's Gong Taekwang...
But he is also BTOB's Yook Sungjae..

***

The time setting follows with the ending of the drama. Time when Eun Bi returns to Sekang High after being gone for a few months (?). In this story, she returns with her sister instead. Also, the whole Kang So Young fiasco is over. Say she had been expelled and all. BUT the director, Gong Taekwang's father, has not been arrested. Let's imagine that the whole scandal with Jung Soo In's death didn't happen at all. Just to not further complicate this plot. ? Hope you guys enjoy! *kisses*

New update; I changed the surname of Taekwang's father!