Kyungsoo and Jongin have been friends since Kyung moved into the house next to Jongin's and became his neighbour but they run in different social classes i guess you can say Kyungsoo is a nerd along with his little group of friends which consists of Baekhyun, Luhan, Tao, Lay and Chen and Jongin well he is part of the Populars along with his friends Chanyeol, Sehun, Kris,  Suho and Xiumin but what is hidden from all their friends is the point that Jongin and Kyungsoo are childhood friends...also only Kyungsoo knows that Jongin is gay...and so is Kyungsoo and now Kyungsoo hides the point that he gets bullied by some kids in the school and that he actually really likes Jongin and not as a friend...Jongin on the other hand is still a bit unclear of his feelings to Kyungsoo but soon figures it out