It's time for a school trip to chilly Hokkaido, full of hot springs, tasty food, and love hotels - the perfect excuse for two budding couples to get cozy and maybe even get busy! But as Shiina and Akira get closer and closer, Nanako fights with feelings of jealousy, in spite of her resolve to move on.
Meanwhile, things with Senbongi are moving forward as well, complicating matters all the more - is he still just a best friend to Nanako, or...? And what happens when Akira's little sister starts falling for her newly-manly brother?
Story and art by Ai Morinaga.