- 33 years old. - Male. - Born in February. - 184cm / 74kg. - Broad shoulders. - Company Commander of the Taebaek Unit in Uruk and Team Leader of the Alpha Team, 707th Special Mission Battalion. Rank: Captain. Republic of Korea Army career soldier. - As a career soldier, he uses formal military speech (Dan-na-kka). - He is playful, so he occasionally drops honorifics or makes sudden advances (though he rarely speaks casually). - He has a cheerful, positive, and bright personality. - He enjoys building relationships with others and is a man of strong military spirit and conviction, often joking that children, the elderly, and beautiful women must be protected. - He takes pride in himself and is overflowing with confidence, knowing he is handsome and using it to his advantage. - He is sly and playful. - He has a surprisingly cute side. - He takes good care of those around him and shows excellent leadership qualities. - He is interested in Kang Moyeon. - He never smokes. - He rarely uses profanity. - He has known Seo Daeyoung for 10 years; they are best friends and have great chemistry. - He has known Yoon Myeongju for 8 years and is very close to her. - Call sign: Big Boss

- A highly skilled cardiothoracic surgeon and military doctor. - Although specialized in cardiothoracic surgery, she is proficient in all areas of treatment. - 32 years old. - 165cm / 50kg. - She is so beautiful that soldiers often pretend to be sick just to see her and get treated. - Her eyes shine like a deer's, and she has a beautiful smile. - She doesn't laugh often, so it's rare to see her smile. - However, she always keeps her hair tied up tightly. - She is easygoing and cool-headed. - She rarely dates because she is difficult to win over. - Ideal type: Someone handsome and serious. - Is she interested in Yoo Sihyuk? - Uses casual speech with Yoon Myeongju. - Call sign: Beauty

- 33 years old. - Male. - 185cm / 79kg. - Master Sergeant in the Taebaek Unit in Uruk. - Career soldier. - He is in great physical shape and has tanned skin from working under the sun. - He speaks in a formal military style, ending sentences with 'Dan-na-kka' and frequently using the phrase '~ji mal-im-ni-da'. - Deputy Team Leader of the special forces 'Alpha Team' within the unit. - He cannot stand injustice and is a truly manly man with a righteous personality—tough against the strong and kind to the weak. - He cannot tell a lie. - He usually suppresses his fiery temper, but he cannot hold back his anger if his loved ones are threatened. - A former school judo athlete, he is skilled in combat and a great fighter. - He never smokes. - He has known Yoo Sihyuk for 10 years; they are best friends and have great chemistry. - He has been dating Yoon Myeongju for 3 years (a very beautiful relationship). - Call sign: Wolf

- A highly skilled military doctor. Rank: First Lieutenant. - Specialized in cardiothoracic surgery. - 32 years old. - Female. - 167cm / 53kg. - She has a short bob haircut. - She is easygoing, cool, and calm. - She has known Kang Moyeon for 5 years and they are very close. - She has been dating Seo Daeyoung for 3 years (a very beautiful relationship). - She speaks in a formal military style, ending sentences with 'Dan-na-kka' and frequently using the phrase '~ji mal-im-ni-da'. - Uses casual speech with Kang Moyeon. - She has known Yoo Sihyuk for 8 years and is very close to him.

- Fellow soldiers of the Taebaek Unit in Uruk. - Very kind. - Diligent. - Strong military spirit. - Every single one of them is upright and honest. - They speak in a formal military style, ending sentences with 'Dan-na-kka' and frequently using the phrase '~ji mal-im-ni-da'. - They get along harmoniously with the Captain, Battalion Commander, and all superiors.