Graduated from Esmod Seoul in 1992 Juun.J began his career as a designer for “Chiffons” followed by design director for Club Monaco” and “NIX”.  In 1999 he launched his brand “Lone Costume” and has shown it during the Seoul Fashion Week ever since. He has also collaborated several times with the Japanese artist Nuts and the English artist Simon Henwood.

In July 2007 he showed his collection during the Official Schedule of the Men’s Fashion Week in Paris for the first time. Juun.J likes to create new silhouettes and garments from an overlapping of items and silhouette to silhouette all of which dramatically conflict with each other. Shirts and cardigans, knit sleeved jackets and knitwear are overlapping each other and newly born as different items. Juun.J basic design concept is classic & tailoring.  J likes to mix and transform classic items with street fashion mixes in an atypical way some chic & classic moods with streetwear. He then creates the street tailoring.