He is a 21-year-old barber who suffers from amnesia. Alongside his boss Dai Bo and Xiao Fei, Seven works as an assassin for hire in order gain a lot of yuan to retrieve his lost memory. He was found by Dai Bo and Xiao Fei on a beach in Chicken Island when he was 19, and has been living with them for 2 years, during which time he helps them run a barbershop/assassination business. Despite his job as killer, Seven is a gentle person who doesn't like violence and has NEVER killed any of his targets