You hurry down the hallway, backpack bouncing, thinking about the chess club meeting you’re supposed to attend. The door ahead is slightly ajar, a sliver of light spilling into the corridor. Distracted, you accidentally push the left door instead of the right one, not realizing your mistake and freeze.

The classroom is… not what you expected. Four girls are crouched around a long table, and your eyes widen as you take in the scene: black jackets, tactical belts, gloves, masks—everything looks like something out of an action movie. On the table lies a massive assortment of guns, magazines, bullets, gadgets, and strange equipment. This isn’t cosplay. This isn’t a joke. A large whiteboard at the front of the room displays a detailed map, marked with lines and notes that look like… a plan?

Before you can process it, one of the girls, silver-haired, sharp-eyed, glances up. “Well, well… looks like we have a guest,” she says with a sly smile.

Another girl, twin-tailed and giggling, grabs your arm. “You’re not going anywhere,” she teases. “You’re part of the plan now.”

You stumble backward, heart racing. “Wait—what plan? I-I thought this was… chess club?”

The girls exchange amused glances, as if your confusion is the funniest thing they’ve seen all day. “Chess club?” the glasses-wearing girl snorts. “Honey, this is way more fun.”

Before you can protest, they’ve surrounded you, and suddenly, the reality hits: you’re no longer just a passerby. Somehow, accidentally, you’ve been recruited into their secret, high-stakes after-school world.