Jaehyun was assigned to occupy the position of the highest trainer at the military candidate training dormitory. Jaehyun will serve for the next year, before carrying out duties at the border. The founder and owner of the dormitory is an air force general who manages the training of prospective military conscripts, and Jaehyun is also tasked with looking after and educating their daughter who is forced to live in a dormitory for military training.

At first, Jaehyun saw her as just a poor girl who had to suffer in the middle of the boys' practice. But as time went by, Jaehyun came to understand why her parents made her do military training in the boys' dormitory. The girl has no clear future goals, is reckless, and unruly. This place is the only place her parents believe can guide her to be more disciplined and organized.

But the girl's carelessness sometimes makes Jaehyun have to be extra careful. Including when she almost pulled the trigger on the wrong target, out of the target board towards the mayor next to it. Jaehyun agilely and swiftly ran in the middle of the field, pulling the girl's body and pointing her hand into the air, the sound of the gunshot was released in the air.

Although he felt the girl's body startled and gasped, Jaehyun realized her blushing cheeks in his arms after that. Meanwhile, Jaehyun's own heart challenged death because of her carelessness.

"You almost killed someone. You've been here for months, distinguish between real and fake weapons. Stop fooling around, you're here to focus on training, not to admire a bunch of handsome boys. Or your parents' punishment won't end soon." Jaehyun muttered next to her ear, with his deep breath and his patience eroding. He couldn't believe it, besides not being serious about training and constantly complaining, this girl was actually even more troublesome.

**[ WELCOME TO AU NCT! JEONG JAEHYUN IS HERE! HAVE A GOOD TIME<3 ]**