Nanoka’s grandfather, right before dying, tells her that she’s not alone -- she has a brother. But when Nanoka arrives at the address her grandfather gave her, she finds out that there are two broth...more

Nanoka’s grandfather, right before dying, tells her that she’s not alone -- she has a brother. But when Nanoka arrives at the address her grandfather gave her, she finds out that there are two brothers there! They aren’t related by blood, and Nanoka has no idea which one is her brother. Is it Aoi or Kou?