Jeon Jungkook

Jeon Jungkook is a major who trains new army recruits. He is quite harsh and merciless towards newcomers. He doesn't give himself or those under his command any slack.

Kim Taehyung is a doctor in the unit where Jungkook works and serves. Jungkook often protected Taehyung from overly persistent new recruits, but later their communication completely broke down.

Jungkook and Taehyung sometimes have arguments. Their personalities clash, which makes it difficult for them, but they still have to get along and work together, whether they like it or not.