The summer heat is on!
Koizumi-san looks at the trio loudly suffering from the heat with disdain while she continues on her ramen pilgrimage. 
Yuu wills herself to follow her, and Koizumi-san declares that she will be having "hiyashi" ramen.
What exactly is this "hiyashi" ramen?
Nagi
شينجوكو 
غولدن غاي
Nagi Shinjuku Golden Gai
Nagi Shinjuku Golden Gai
Nagi Shinjuku
 Golden Gai
Наги Синдзюку
Золотой гай