Hiyori likes to spend her times alone fly fishing. One day, a very energetic girl named Koharu tries to jump into the cold ocean in front of Hiyori and she stops her. This ends up being the beginning of their very unique relationship.
My new sister...
...أختي الجديدة
Zu meiner neuen Familie …
Mi nueva familia…
Ma nouvelle demi-sœur…
La mia nuova famiglia...
A nova integrante da minha nova família...