Aira Kaede is 18 years old in 3rd grade in Mirai High School and loves to do some boxing as a hobby and club activities, but down in his heart is to protect his sister, Yumi Kaede who is 17 years old in 2nd grade, even though she’s the manager of the boxing club in their high school, she doesn’t do boxing, instead, she loves to do some hunting and because of her love to the many types of gun and babbling about everything about the gun, everyone at school calls her “The Hunter” and even doing so she often doing some hunting with her brother. This is the story about how they manage to do both of their hobbies with each other and daily activities in their life. What story will they do and get in their daily lives?