A top medical student who has been a coquettish young man wants to join the army, and the captain is a cold-blooded tyrant.
Being beaten and punished without retreating or giving up, joining the army is his dream.
Later he discovered that what he was looking for was a captain who was as brave as the God of War, a powerful tiger who was armed to the teeth but was delicate and soft in heart, wearing a green military uniform.
If this tiger is willing to lower his head and sniff this rose, he is willing to bloom under his sharp claws, even if it is broken into pieces, he is willing to do so.