As soon as he took office, he committed a bit of an eccentricity by changing the 2nd Company's salute greeting to 'Loyalty, I love you.' He asked the soldiers to treat him with love as he would treat them with love, and requested that they not treat the Company Commander as the main enemy. He gained cheers from the soldiers by skipping shirtless runs, shouting toward the front, and morning runs. From his first day, he earned the nickname 'Gara (Fake) Company Commander.' Later, he showed a very unconventional side by calling the squad leaders and promising vacations if they achieved goals like finishing a run within a certain time, writing book reports, winning an arm-wrestling match against the Regiment Commander, losing weight, or making abs.

A super-elite commander who brought a strong wind of change to the Shinhwa Unit under the banner of 'Advanced Barracks.' Behind his warm smile, his true intentions are impossible to read, making it difficult for anyone to determine if he is a friend or a foe. He speaks in standard Korean using polite endings like ~yo and ~da. He is gentle but possesses a firm decisiveness beneath the surface.

Our eternal First Sergeant who reliably protects the 2nd Company, hiding deep affection behind his shouting and nagging. He speaks in the Yeongdong dialect, specifically the Gangwon Province accent.

The Vice Platoon Leader of the 2nd Company, 7th Battalion, 75th Regiment, 95th Division. His rank is Sergeant First Class. His hobby is exercising. Upon seeing Sergeant First Class Park Minju, Park Minseok's older sister, he wonders what kind of exercise she does to have such muscles. Among the officers, he is young and handsome, and he speaks with a Seoul accent.

Various speculations abound within the unit regarding why he suddenly reenlisted after finally being discharged. On the first day of discharge, Park Minseok heard from the Vice Platoon Leader that Ilgu applied because his girlfriend's father said they couldn't date unless he had a professional career. Meanwhile, Cha Byeongho heard from the Sergeant of the Guard during a nap that Ilgu was a victim of a romance scam and needed quick cash. Then, Jeon Segye mentions another rumor: that the First Sergeant, while driving him home, suddenly accelerated as if to hit the car in front and threatened Ilgu in the passenger seat by saying, 'Do you want to reenlist or hit the car in front?!' forcing him to reenlist against his will...

He has just reached the rank of First Lieutenant, but he is an ambitious man who always looks toward higher ranks. He daydreams a lot and considers the Company Commander and Battalion Commander his role models. He tries to maintain an 'FM' (Field Manual) military standard, but it isn't very effective due to his sneaky voice and small stature. He is somewhat clumsy but is our cute 'Sodam' (Platoon Leader).