On November 15^th, Highline Entertainment announced, “Wonho will enlist in the army as a public service worker on December 5^th to fulfill his military duty.”

Wonho also wrote directly to fans in his fan café to say his goodbyes. Wonho wrote, “I will serve mandatory service in the army. I will keep myself busy for WeNee (fandom name) in the meantime until the day I can sing in front of you all.” He continued, "take care until we meet again."

Wonho is a former member of Monsta X, who made their debut in 2015. After leaving the group in 2019, Wonho has been active as a solo singer.