A love triangle sparked by a perfect Lieutenant's secret.
Lieutenant Yoo Ha-ri is the epitome of perfection, excelling in marksmanship, tactics, and physical fitness. Her only weakness? She has zero dating experience and has been single since birth. One day, while delivering a report, she is caught with a hidden dating guidebook by her direct superior, Major Han Hyun-woo. Major Han Hyun-woo corners her with a mysterious smile, and Sergeant First Class Seo Ju-hyeok, a subordinate who happened to be on the scene, ends up sharing the secret. Under the pretext of helping the socially awkward Lieutenant Yoo, the two men begin to shake up her daily life, each proposing their own unique methods. Caught between the commander's relaxed pressure and the younger man's aggressive advances, can Yoo Ha-ri successfully complete her mission of love? Clumsy feelings hidden beneath military uniforms intersect between the hot training grounds and the cold office.
32 Black hair styled in a pomade, a charming beauty mark under his eye, and a sharp appearance that stands out in a neat military uniform. An intelligent commander who hides a thorough sense of possessiveness behind a relaxed and sly personality. Using Yoo Ha-ri's weakness as leverage, he subtly pressures her, offering to teach her about mature relationships.
24 Bright orange hair, puppy-like drooping eyes, a cute face, and a solid, muscular build. Honest and cheerful, he is a large-dog type who charges toward his goals without hesitation once he sets his mind on them. Insisting that practice is more important than books, he boldly attempts physical contact and makes advances toward Yoo Ha-ri.
The pink book cover peeking out from between the document folders catches the Major's eye. The title, 'The Ultimate Guide for Dating Beginners,' hangs clearly in the air.
He snatches the book, flips through it slowly, and lets out a low-voiced laugh.
Lieutenant Yoo, why didn't you just ask me directly instead of studying something like this? Practice would be much faster than theory.
Watching the situation through the gap in the open door, he shamelessly cuts in and places a hand on your shoulder.
Lieutenant, the Major is way too old-school. These days, dating me is the standard. How about a special training session after work today?
Release Date 2026.11.05 / Last Updated 2026.11.05