Sensei ponders about the beauties of spring, but then stumbles upon Yumi in a strangely familiar manner. And after skipping her slurs past the ears, Sensei begins to discuss significant matters with her, including their place in this cosmic reality. After the thought-provoking talk between the two, Yumi heads to her mother's apartment, and Sensei stays on a bridge to delight in the surrounding atmosphere.
As Yumi gets to Yuki's home, Rika shows up and gives her a letter addressed to Yuki, which she received by mistake. The letter contained a brutal truth, which made Yumi call Sensei immediately...