"Maybe it’s not that bad. We both get the mutual benefits anyway.” When one of them takes it lightly and the other takes it seriously to be friends with benefits. Uea, a graphic designer who is cold-hearted, always wears a poker face, and King, a programmer who has never wanted to be in a serious relationship with anyone, made a deal to be friends with benefits in secret. From a friend of another friend who barely talk nicely to each other for years to a friend of another friend that comes with benefits instead. However, it seems like this kind of relationship is bringing them unexpected trouble. While they both gave their word that they won’t fall for one another, one of them has fallen hard into the pool of this forbidden sentiment nonetheless!