Lee Sungyeol,  known for his sarcasm and politeness.  Usually described as a nerd and is very much loved by everyone.  At the age of 17, his hobbies are reading,  listening to music and taking long naps.  Kim Myungsoo is also 17 although he is the complete opposite of Sungyeol.  Sure he is a nerd but unlike Sungyeol,  he loves to play with people's heart and winning is what he enjoys the most.  He's arrogant,  rude and very much a playboy to the bone.