BTS has trained ARMYs to have a good eye in catching hints. RM, Jin, Suga, J-Hope, Jimin, V, and Jungkook have been leaving easter eggs on their music videos, appearances, interviews, and more. The fans know this, which is why they always put on their detective hats every time the boys releases something.

However, there are times that ARMYs could never figure out what a specific video or photo is all about. To make matters worse, BTS would keep their mouths shut, and let the fandom discover things themselves, even if it would take years for them to finally solve the case.

One of those mysteries is a photo of Suga in a university stairwell, carrying a stack of books. (Check out the photos here and here). The photo circulated online back in 2017, and ARMYs assumed that the BTS rapper was pursuing his education while continuing with his career.

The snap didn’t have any details to confirm the scenario. For two years, ARMYs were tortured by Suga’s mystery photo, until the truth behind the picture has finally been revealed last year.

As it turns out, Suga’s mystery photo was shot for BTS’s mobile game, BTS WORLD. The “Daechwita” rapper was not juggling school and music career at the time, but he was shooting clips for the game.

BTS WORLD has a fictionalized plotline for each of the members, and Suga is a piano major at the Music Academy. The plot explains why the BTS star was carrying all those books in the school stairwell in his mystery photo. (Check out the photos here and here).

While Suga’s mystery photo has finally been solved, BTS is not giving ARMYs a break with their detective job. One of the recent mysteries is from V. The “Sweet Night” singer took snaps of himself getting glammed up and posted them on Twitter back in August.

V didn’t say anything about what he was doing or where he was going. But based on the BTS singer's style, ARMYs knew he was doing something big. As always, theories kept pouring in. Finally, on Sept. 29, the mystery was finally solved.

Variety magazine shared a sneak peek of BTS’s photoshoot for its cover. The clip showed RM, Jin, Suga, J-Hope, Jimin, V, and Jungkook in matching suits. Eagle-eyed ARMYs then spotted a couple of snaps from the photoshoots on one of the monitors and saw the 24-year-old singer, songwriter, and actor wearing the outfit from his mystery photos.