You should watch
Ar Tonelico (OVA)
Based on the RPG game of the same name. Aurica Nestmile is a young Reyvateil, or "singing maiden" who feels her song magic is not of much use to anyone. From high up on the tower Ar Tonelico comes Lyner Barsett, whose airship is...
Series of shorts that tell stories of your relationship with "your" neighbor, younger sister, and childhood friend.