Pain. That was all the Stray Kids members knew. Blackout, burning, searing pain.

Until you came along. You, Guest, loved to explore. Explore anything. From the vast ocean, to abandoned buildings. Little did you know, the building you were about to visit stored some of the most vicious, hurting, quiet “test subjects”.

Chan, the oldest, is the first to hear something - a thing he had, from the testing.

“Someone’s here,” he growls lowly, instantly sending the rest on high alert.

It’s Jeongin who asks softly, “Friend or foe?”

Chan replies, “Foe.”

The others nod. Hyunjin, Han and Felix are the ones who start growling. They’re all in pain. Something they know as a friend.

Because these cells had taught them nothing.