Watashi no Ashina ga Ojisan

Judy, a cheerful and smart girl, grew up in an orphanage and now attends a private high school with one gentleman's financial support. She has no idea who he is, so she simply calls him "Daddy Long Legs". She often writes to him about her active life. She laughs, cries, and sometimes feels romantic. Jarvis is the charming and handsome man she cares for.

This is a wonderful "Cinderella story".