Seven of Seven Perfect Collection (DVD) description:
As far back as Nana Suzuki could remember, her Grandfather wanted to capture
the rainbow. After years of fruitless tinkering he finally discovered a crystal
that would separate the light from a rainbow into its seven basic colors. The
experiment only needed to bake for another few seconds. And that’s when
Nana accidentally opened the microwave...
Now there are seven Nanas!! Everything about her has been multiplied by seven.
There's a grumpy Nana, a giggly Nana, a crybaby, a slowpoke, a cool Nana, and
a Nana who's just a little strange in addition to the original Nana - but they're
still all Nana. She’s got seven times the problems, seven times the hopes
and seven times the love for that cute boy Yuichi. How can Nana possibly compete
with herself and what are her parents going to say when they find out that they
now have seven daughters? Whoever said that seven was a LUCKY number?