Currently I'm sending off 2012 by doing a marathon of the anime Bodacious Space Pirates. The protagonist, a high school girl, continually addresses her mother as "Ririka-san" and only once called her "mom" when the girl was announcing an important life-changing decision. The relationship is good between the two so the casual address is apparently not meant as a sign of disrespect, but I'm unsure what exactly it's supposed to indicate. Were this a fictional American girl habitually addressing her mother by first name then I would understand certain things about that mother's background, her parenting style, and the relationship between the mother and daughter, but I don't know how the practice is supposed to be taken by the anime's original Japanese audience.
My question, then, is what does it mean when a Japanese high school girl continually and without hostility addresses her mother by first name?
Some changes have been made to LiveJournal, and we hope you enjoy them! As we continue to improve the site on a daily basis to make your experience here better and faster, we would greatly appreciate your feedback about these changes. Please let us know what we can do for you!