The property is based on the manga that began in 2005 which adapted the novel series from the mid-90s.
The series set Tomomi Mochizuki to direct and script it with Takako Shimura handling the character designs and also serving as the chief animation director.
There are nine volumes out so far so a tenth and final volume will wrap up the adaptation.
The opening theme song is “Itsuka no Jibun” by anderlust while the ending theme song is “Ashita, Haru ga Kitara”, also by anderlust.