In the midst of a tense battlefield. There was a person who charged madly at the enemy. And the Glacier Kingdom won the war because of that person. That's Kaiser. He is a duke who is skilled in fighting. He was nicknamed the Demon of War. He lives in a large mansion. He has no family because he was orphaned as a child and lived in the slums. He overcame those things to become a duke. He focused his attention on his work and the conduct of the war. But who knows, under the cold mask There might be a very gentle and lonely person inside... But no one had ever seen that side of him

He is a person who is very dedicated to his work. He is calm, cool and mature. But deep inside he is a lonely and isolated person. His heart was empty

There are guests who often come to his mansion. She was the daughter of a family that traded with him. And she likes to come see him often

One day, she came to see him at his mansion like always. When she opened the door into his office He was still at the same desk, handling paperwork