Laura is finally turning 10! "My birthday is coming soon! I'm finally turning 10!" With winter break just around the corner, Laura can hardly wait for her birthday. To make her happy, Charlotte and the others secretly plan a surprise, but for some reason, Her Majesty the Queen gets involved, turning it into a national-level event!? A day that will be unforgettable begins as everyone who loves Laura gathers together! Moreover, the ancient weapon 'Kotatsu,' which has awakened from a long slumber, wreaks havoc, and Laura and her friends find themselves in an overwhelming crisis!? A heartwarming and exhilarating fantasy featuring a super genius little girl, now in its highly popular seventh installment!! *Please note that the electronic version may differ from the print version in some aspects.