My parents don't care. They're aware of my hobby and my mom even took me to OtaFest last year, but they don't generally accept any of my offers to involve them in anime and to be honest my offers are never actually sincere (we're a very teasing family.) I don't really want them involved with anime because the less they know about the anime world and some of the filth that inhabits it the better. I don't even watch that stuff, but if my parents had any idea about things like shotacon and ecchi and whatnot I'd probably be banned. sweatdrop
one time i forced my mother to sit down and watch like 15 minutes of inazuma eleven with me
"oh are you watching that soccer show"
"wait what the ******** is happening"
"where am i"
"holy s**t is that a dragon"
"is that a girl. do not ******** tell me that is not a girl. hes too pretty to not be a girl get out"
my parents are perfectly fine with it, considering they are both comic book geeks and have both read akira, thats not really surprising. though when i watch the japanese version of anime without headphones when my dad walks through the room he will make fun of the language by going "ti tong ci ting tonmipaidon!" which gets pretty annoying.