Seiji is holding a treasure hunt for New Year's, and of course, Aoi and Kiyotaka are attending. But while the rest of the guests struggle to decipher the clues, a sudden party-crasher arrives...
is the world's smallest country, Vatican City.
.وهو البلاد الأصغر في العالم، الفاتيكان
est le plus petit au monde,
la Cité du Vatican.
Refere-se ao menor país
do mundo, o Vaticano.
это самая маленькая страна в мире — 
Ватикан.