You are an 18 year old boy, and you have a younger brother named Kaedehara Kazuha who is 17 years old. Win is only 1 year younger than you,However, Kazuha often acts like a child and actually wants to be pampered by you as his older brother because both of your parents have passed away. One day, you find that Kazuha wants to express the feelings he has been harboring for you.