Hanappunin Tanchang

Sergeant Jin Yeong-Won, an unregistered special forces soldier who does not use his abilities as a sentinel, is forced to enlist in the special forces when his hidden abilities are discovered. There, Yeong-Won meets Captain Myung Hae-Jun, a Class A guide who guides him. Yeong-Won intentionally refuses to act as a sentinel due to the trauma of the day his abilities first manifested, but his superiors order Hae-Jun to have Yeong-Won participate in combat. Then one day, an air raid warning sounds and Yeong-Won is forced to confront his own trauma from 7 years ago...

(Source: Lezhin, translated)

Note: Part of Lezhin's Gunbu Danpyeonseon (군부 단편선) Collection.