"No matter how blindly vindictive Kyungsoo is, Kai can't help but fall in love with him."

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Kyungsoo, or better known as D.O, used to be an extremely well-behaved high school student who was fascinated with Kris, the student-body president. To this day, Kyungsoo still doesn't know the exact reason Kris decided to cruelly play with his emotions. However, now that he is D.O; the vocalist of the famous band EXO, he knows he can get his revenge with even a flick of his finger. The only thing that stops him is Jongin, a fellow band member whose smile is too precious to destroy.

Jongin is his real name that only Kyungsoo knows about, but on the stage, he is Kai: the lead dancer of EXO and the occasional rapper. He's been entranced by Kyungsoo ever since they met, and the singer has been the only thing of importance every since. Jongin doesn't like the CEO's son, Kris, all that much. But the Chinese boy had saved his life once, and requested in return that Jongin must protect him from Kyungsoo. The dancer agreed but didn't understand the reason, because in his eyes, Kyungsoo wouldn't hurt a fly.

Kris has regretted everything he'd done in high school, but he couldn't say it was a bad decision to play around with that kid with the large eyes. Well, that was what he'd thought before he met D.O, again. From the instant they were introduced to each other, Kris knew he was doomed, and he understood that the singer would probably stop at nothing to get back at him for the wounds he'd made. So what better way to survive than to recieve protection from a fellow band-member? And one whom D.O treasures, at that.

Luhan was estatic when the company announced his official debut date, he was even happier when his best friend, Kyungsoo, was debuting with him. But now, as Kyungsoo's past outgoing personality begins to fade away, the Chinese singer could only watch in silence as the younger becomes someone he doesn't recognize anymore. He wasn't there with Kyungsoo during his highschool years, but now he wish he was. Because whatever happened during that time was causing Kyungsoo to be like this, and Luhan wanted nothing more than to take the pain away.

Sehun is home-staying with Luhan because of their families, but he couldn't be any happier. Even if trainee life was tiring and Luhan rarely came home, Sehun would always patiently wait for the Chinese singer. It's been his dream to become a famous star ever since he met Luhan, and it was safe to say that his world revolved around the elder. However, Sehun is often jealous of Luhan's relationship with D.O, and deeply resented him from the bottom of his heart. 

Baekhyun enjoyed EXO's company, and would always try his best when preparing them for the stage: he would highlight D.O's eyes; bring out Luhan's delicate features; dress Kai in revealing clothes that flatter his body, and go a little crazy with Lay's shoes. But he could never figure out what to do with the lead rapper, Chanyeol. Perhaps it's his gigantic build, huge smile, or his large ears, but Baekhyun was always in a dilemma whenever Chanyeol came into his part of the studio. It irritates him because Baekhyun is a perfectionist, and he doesn't allow mistakes.

Chanyeol has always been the mood-maker, or the "happy virus". And he prided himself in bringing smiles to people's faces. However, that didn't seem to be the case for his stylist, Baekhyun, who frowned and paced around in worry whenever he saw him. Chanyeol was determined to fix whatever it is with Baekhyun, because he just simply wants to befriend him. Well, maybe a little bit more than just friends.

Lay had suffered enough. From his harsh trainee days to the life on stage, he always felt that it was too tiring for him to keep up whatever his persona was on camera. He simply wanted to be called Yixing, but the company denied even that single request of his. He had nothing against his group, but he found that he could never really blend in with them. So when the son of the CEO, Kris, spoke to him in his home language and called him by his real name, Yixing found himself falling deeper and deeper. He just doesn't know what exactly he's falling into.