As Tooru's birthday approaches, Run remembers how Tooru helped her study for her high school entrance exams two years ago. Run brings in some cake into school for Tooru's birthday, some of which she spikes with wasabi. As they go home that day, Tooru starts to worry that at the end of the next school year, Run will graduate.

Tooru is worried about the prospect of being left alone after Run and the others eventually graduate. While cleaning up leaves, Yutaka attempts to rescue a cat stuck up a tree. Later, Yūko collects point cards at a fast food restaurant for a free prize, while everyone does impressions of each other. After having a weird dream about Run, Tooru becomes more worried about her fears until she spots Run outside her apartment building, feeling happy that she hasn't changed.