Published July 12, 2021, 7:49 AM Monsta X’s Shownu (Instagram) K-pop boy band Monsta X’s leader Shownu, 29, will be enlisting in the military this month and will serve in the alternative service due to his health condition. Starship Entertainment, Monsta X’s agency, and Shownu both made announcements regarding the matter. The agency said Shownu will enter the military camp on July 22 and undergo basic military training for three weeks before starting his alternative service as a social service worker. It said Shownu was diagnosed with retinal detachment in his left eye in July 2020 and was adjudged to be ineligible for active duty service due to surgery.