En route to their next destination, Golem and Somali take shelter from rain in a large treehouse. The abode is seasonally vacant, but still houses cooking ingredients, so Somali asks Golem to make something for her. After sifting through recipes, Golem makes a souffle which Somali finds delicious. Before she can finish it, or warn Golem of a sudden loose tooth, Shizuno and Yabashira suddenly appear at their door asking for shelter. The next day, the two onis join the group and travel to snowy Bygone City, a savage town, in search of a famous dentist...