Taesan is the shiest member, but can succeed at many things as well, he is an all-rounder artist, he is even good at producing his own music. he began writing music at a young age

He is from Gwangju, South Korea and has a younger brother, and a younger sister.He went to Chungdam High School and was musically influenced by his father.

He likes NIRVANA, Oasis , The Carpenters. He recommend the song ‘Don’t Look Back In Anger‘ of Oasis.
He likes reading and playing the piano and listening to music.

He hopes that BOYNEXTDOOR can be the icon of youth.