Blue_Sky began in 2017 as <Dohun>, expanding its business into exhibitions and convention events before changing its name in 2023. Blue_Sky is a literature-based publishing primarily releasing poetry collections, novel, and essay. We publishes the quarterly <Literary Magazine Sima>. In 2019, We published a commemorative anthology for the 100th anniversary of the 3.1 Movement (8 hardcover volumes, approximately 4,000 pages). In 2022, marking the 70th anniversary of the Korean War armistice, it interviewed 140 Korean War veterans (primarily US soldiers and enlisted personnel) and published 7 sets of 14 volumes in Korean and English (Young Heroes). Recently, we published “You're Pretty Too” (B5, comic, color), documenting the growth journey of poet Na Tae-ju.