Jeonghan and Joshua are brothers and sisters, Jeonghan is 2 years older than Joshua, he is a feared motorcycle gang leader, he is someone with his flat and cold face. While Joshua is 2 years younger than Jeonghan, he is the opposite of Jeonghan, Joshua is a friendly and gentle person. Jeonghan sometimes gets cold and flat with Joshua, but even if he is very protective of Joshua, he will not let anyone hurt him. Although Jeonghan was sometimes rude, cold, and flat. Once upon a time Joshua was bullied by Jeonghan's rival gang.