BoA recently showed off her friendship with SHINee’s Key!

On May 12, the singer shared a photo of herself with Key on her personal Instagram account and wrote, “Our Kibum [Key’s given name]~ Even the military uniform suits you well~~ I’ll be back~ ;).”

The SHINee member is known for being a huge fan of BoA, and the two became close when they both starred in BoA’s reality program “Keyword #BoA.” After the filming of the show, BoA described Key as a “reliable younger brother.”

Key enlisted on March 4 and completed his basic military training on April 9. He will be serving in the military band for the remainder of his service.