Hold on to your hearts, because not one, not two, but four BTS members decided to make an unexpected appearance without their shirts in the behind-the-scenes photos of the photobook. Before the ARMY fandom collectively faints, it’s important to note that there’s a perfectly logical explanation for this seemingly scandalous revelation: costume changes. Most of the shirtless photos capture moments backstage at concerts, providing a glimpse into the intense preparation BTS undergoes before stepping onto the stage