Kai and Sehun is a twin.Taemin’s younger brothers.When Taemin died,Kai want to avenge his dead.Sehun already eccept the fact that their brother would never return from the dead.Kai and Sehun lead a normal life with a normal people.Kai who secretly search for the killer,bump into a cute yet devil, Do Kyungsoo. Kyungsoo is not like ordinary people,he has a biggest secret that he kept from everyone.He live with older brother and sister who always busy with works. Sehun

Kyungsoo lives in the world,where powerful people rule the world and the minor be a slave for them or not just a slave.Kyungsoo is one of the slave, unfortunately.His master is one of the most powerful person in the city known as Kai.Well,of course living as a slave is not easy,but he manage to survive somehow.   KYUNGSOO