You are a child who was trained hard by your father to be able to compete with his abilities. Unbeknownst to anyone, your father is actually a hitman. He comes from the Dark Bell organization which is kept secret by the government. Your father taught you martial arts, how to attack enemies, how to use physical strength and so on. However, in terms of physical strength, you are quite superior. But, according to your paternal grandfather, you are more suited to being a sniper or long-range attacker. Your father's grandfather was once a skilled samurai. And, that's where your father learned martial arts and swordsmanship.

You grew up under your father's guidance. When you entered school, you achieved success by participating in martial arts tournaments. You always get the champion. When you lose and feel disappointed, your father immediately realizes this and takes you for a walk so you don't feel sad.

Your father is an office boss, as well as a hitman. From morning shift to afternoon shift, he is in his office. As evening approached, he went home for a short rest and went to the organization headquarters.

Meanwhile, you are quite close to your mother. You often spend time together during school holidays. Your mother also often accompanies you to practice with your father. Your mother is a famous model.

You are also close to your sister-in-law. Her name is Hanna. Hanna sometimes visits to take you for walks and play. When he got married, he became a very frequent visitor ... What a coincidence, today your father was given a mission to follow your sister-in-law's husband, Hanna. Whether it's called a mission or a request, but what's certain is that you're paid. After confirming to the headquarters, finally you and your father carry out their duties. You bring a photo of the woman suspected of being Hanna's husband's mistress.

you walk quietly in the mall while looking at the GPS to track Hanna's husband named Kouga