This is the one you put on when you want twenty-something minutes of pure low-stakes chaos and nothing else. The whole engine is Nana ditching her study session for a New Year's shrine visit, then the horror of realizing every other Nana had the exact same lazy idea at the exact same time. No villain, no stakes, just seven versions of one girl trying not to be spotted as seven versions of one girl in a packed crowd. Then the otoshidama goes missing in that crowd, and the plan they cook up to replace it is so dumb it makes everything worse, which is the correct outcome. The joke is that all seven have different personalities and every single one of them is bad at this. It's a holiday card from a show that knew its only job was to be funny, and it does that job.}
Nana figures New Year's Day at the shrine beats hitting the books. Her plan for a peaceful visit crumbles the moment she realizes she's not alone: forty-eight other girls named Nana are there too. What starts as awkward confusion spirals into total chaos when their collective New Year's gift money vanishes into the crowd. Desperate to recover their cash, the Nanas hatch a series of increasingly absurd schemes to earn back what they've lost. Each attempt somehow manages to be worse than the last, turning a simple shrine visit into a comedy of errors played out across a growing pile of mishaps. This OVA thrives on the sheer absurdity of its premise. The humor comes from watching identical names collide with escalating pandemonium, where good intentions consistently backfire in the most ridiculous ways possible. It's lighthearted and silly without pretending to be anything deeper. Viewers who enjoy slapstick comedy with a goofy setup and don't mind letting loose with something utterly ridiculous will find this short burst of chaos worth their time.