I've encounter something like that. People
usually ask me what's a cel and why do you spend
so much money on them. I just tell them that I
enjoy collecting them. I tell them why do people
collect baseball cards and etc.? It's a hobby.
If they question further I tell them that I like
that particular anime and I wanted to own a piece
of my favorite character and I take great joy
in knowing that everyone who saw the show saw
that one particular part that I own. I hope this
answers you question. Anyway my parents don't
know about my forbidden fruits. If they found out
how much I spent... they will raise the dead.