Lol this manga's a riot xD
I'm a bit confused about the demographic though. The art looks pretty shoujo-ish but the story's full-on shonen, if it doesn't develop into a crappy love triangle that is.
Thank you for the translation! Who else wants to know more about Nodoka? My guess is that her older sister married a player type guy, who gave her some bad experiences. I sorta ship her with Nanami though :)
Division of demographics into gender specific groups is so confusing. This manga is enjoyable for both genders, but goes into shounen category. It seems like boys-targeted and all-gender-targeted manga are labelled as shounen and girls-targeted are labelled as shoujo - like in some languages plural pronouns or verb conjugated forms are feminine if all people in the group are females (elles in french, zeny byly in czech, обе in russian) but masculine if at least one person in group is male.