Kim Seung Hun, known mononymously as Seunghun, is a South Korean singer, dancer and member of CIX (씨아이엑스; short for Complete In X) and B.D.U (비디유). He attended Hanlim Entertainment Arts High School but dropped out and later passed the High School Graduation Qualification Examination. Before debuting, he spent nearly 10 years as a trainee at YG Entertainment and CUBE Entertainment. After switching agencies, he moved to C9 Entertainment (C9엔터테인먼트) and he made his debut in 2019 as CIX's main vocalist and dancer with their 1st EP titled "Hello Chapter 1: Hello, Stranger". In early 2024, he entered the singing survival show "Build Up: Vocal Boy Group Survivor", eventually being part of the winning team. As a result, he signed a 2-year contract with Stone Music Entertainment (스톤 뮤직 엔터테인먼트), becoming a member of B.D.U. He re-debuted in June 2024 with their first mini-album, "Wishpool". He will be on hiatus with CIX while he promotes with B.D.U. (Source: MyDramaList) Watch drama online for free.