"He watched me get tortured. This? It's nothing."

"You took things too far. How could you expect me to forget about all it?"

"You destroyed my life; destroying yours is just fair."

"If me dead is what you want so badly then so be."

In this deadly game of revenge and broken promises, no one will walk away alive.

He was supposed to be happy and he was. Nicknamed the Happy Virus, Chanyeol grew up in relatively happy and contented family. It only took one wrong step for the farce to crumble and fall, revealing the dirty truth of his father's past.

She was supposed to be happy. As the youngest child, Ning was pampered by both her parents and her older siblings and there was nothing she could wish for. One mistake of her father was all it took for her life to be ruined.
 

Park Chanyeol

Known as Happy Virus, he certainly doesn't disappoint with his endless lame joys nor humorous antics. Things change drastically when he discovers the truth behind his father's mask.

Chu Zining aka Ning

Pretty or she used to be before that night. After her face was destroyed by her father's enemy,  revenge and payback is all she ever thinks of.

Chu Xiding aka Ding, Chu Xihing aka Hing and Chu Ziling aka Ling

The older siblings of Ning. Each of them love Ning to bits; I meant, she is their youngest sibling. Like Ning, Ling was also scared by her father's enemy; her hand was sprayed with acid.