The role of Ut Kho is played by Diem Hang Lamon. Ut Kho is a female soldier in the guillotine team commanded by Bay Theo (Thai Hoa).
Ut Kho and his teammates lived, practiced, fought, experienced difficult moments but also had many moments of love for life and optimism.
In the film, Ut Kho is the youngest member of the tour team, with a clear voice and an innocent soul. She often works as a waiter during breaks. When experiencing the incident, Ut Kho endured and suppressed the pain so as not to affect the fighting spirit of the whole team.
Diem Hang revealed that she has lost ten quintals to have an appearance suitable for the role. "To create motivation, the actors have a weight loss contest, each week there will be people to weigh who is the best weight loss contest. I alone had to lose more than 10kg for the role.
However, I have to lose weight and work hard to look strong, healthy, and without losing energy. Due to lack of weight training experience, I have failed continuously. I am almost at the bottom of the rankings for both physical strength and weight loss. At those times, my brothers and sisters loved me like the youngest, continuously encouraged and reassured me, thanks to which I had the motivation to try harder," Diem Hang confided.
During her pre-school period, she and other actors learned how to disassemble, shoot, learn swimming, learn martial arts, and practice moving in the ground. In addition, Diem Hang also learned to sing Cai Luong of the Southern people.

Diem Hang was born in 2003, from Quang Nam. She took the stage name Lamoon, originating from the image of a moon captain. The young singer feels that he and this character have many similarities, especially positive energy, a lot of energy.
She became known when she participated in Vietnam Idol 2023 and entered the top 6. The singer impressed when changing the musical material and fashion style continuously, transforming and diversifying through each performance.
Coming out of Vietnam Idol, Diem Hang released the MV "Sao di luong". In addition to singing, the beauty also has the ability to compose, write her own lyrics and rap.

Ut Kho is also Diem Hang's first film role. She was called up for audition after director Bui Thac Chuyen happened to watch Vietnam Idol 2023 and was impressed with Diem Hang's innocence and purity.
When he learned that Diem Hang was a student at the University of Theatre and Cinema, he was even more assured about his choice. When attending the film's release, many people were surprised because Diem Hang's appearance was completely different from what she appeared in the film.