So far, I've heard only a few ways to say brother and sister, as well as mom and dad, but have no idea if they are right...What i think I know is:
Oni-san/sama/chan (Brother, Sister, different emphasis?)
Otou-Sama/san (Dad, possibly mom?)
Sorry, I really know so little because I've only learned what I could from subtitles, so I'm not sure how many flaws there are in the already so simple 2 word list I have here -_-. I would be really inerested to know how to refer to my family in japanese: uncles, aunts, sisters, brothers, cousins, etc. Thank you in advance, arigatou gozaimasu!