For Sehun, school was an empty, lonely hell... until he met Luhan. He brought light into Sehun's life and is his angel. Without his newfound nerdy deer angel, Sehun wouldn't survive his empty, depressing life. Though, Sehun is popular and a rich kid(junior in high school) with many "friends"(they pretend to be because he's popular/rich), yet something is missing. He has problems at home and drama at school. His heart isn't complete. But it's later healed when he meets the smart, nerdy, petite/cute, deer-like boy named Luhan. 

Luhan is this smart, nerdy and small kid who's cute and looks like a deer. He has a big brain, though his heart is bigger. He comes from poor family and is raised by just his mother. He's an only child and a freshman in high school. This encourages him to be smart and fulfill his dream of going to college and being successful to live well and support his mom. To him, this meant he must fully concentrate on school and academics, and no distractions... until Sehun came into his life. Sehun, the popular kid that's 2 years older, was Luhan's idol/crush. The moment he laid eyes on him, he couldn't take his eyes off. Sehun is his distraction.