Yep, it's real. I have also purchased cels from
that seller before..... And this little beauty
has cost me the "small fortune" of 80000 yens,
now i cannot afford the other KOR cel that popped
up for auction -_-.
As you say the background is non matching, i can
tell. Don't even know if it's a background from
the series or even a real background (the other
cels that i got from him some time ago had laser
copy backgrounds) and the auction doesn't mention
if the background is real or not, at least as far
as i can understand the translated text.