Kazuki , a normal teenager living in Shibuya as a High School student, is living with her sister Rina.  Both of them are pretty close, since they live far away from their parents, they have to stick together in able to survive the city life. 

But, what happens if your own older brother falls in love with you?

Main Characters: 

Rina  (YOU)

Kazuki 

Other characters will appear throughout the story.