After just being dumped by her boyfriend, Yū's friend Misa Nakamura follows Koizumi to a ramen shop and ends up picking its spiciest dish, Hokkyoku ramen. Taking a liking to the extremely spicy ramen, Misa lets out her frustration over her breakup and becomes friends with Koizumi. Later, Yū's other friend, Jun Takahashi, is asked to speak with Koizumi about her poor test results, which turns out to be because she was exhausted following a ramen pilgrimage. Hearing about all the peculiar flavors of ramen Koizumi has tried, Jun decides to try out a Pineapple Shrimp Salt ramen at a local ramen shop, finding she still loves ramen despite how it fogs up her glasses.
Koizumi is a mysterious and attractive high school student. But what most people don't know about her is that she's a ramen master who is always on the lookout for great ramen restaurants. Everyday, she goes hunting for real-life places serving the best ramen dishes and delightfully eats the delicious noodles. The way Koizumi downs a giant bowl of ramen–more adeptly than any large man–will amaze and delight you!
