Still unknown as far as I know: Takao Kuroi, Ishikawa, Ozaki, Manami Okamoto, Mai Hidaka, Nonowa. Please post here if more info becomes available.
I am guessing that we'll never know about them... especially Nonowa. Nonowa doesn't need a birthday since it celebrates it every single day.
I might be reading this wrong but is Haruka listed twice?
If the characters were to have a birth year, it'd be pushed back and change every year.
Yea, it would kinda be like The Simpsons.Despite being a few years old, Ami and Mami will always be 12.Awesome! *shot*
So they will always have fun forever!!!!!