When Koharu is hospitalized, her mother secretly undergoes an aptitude test to become Koharu's donor. Meanwhile, Koharu's stepfather learns that Koharu is ill and that Shiori is deeply involved with Shin's death.
Nozomi thinks that her mother may be ill and tries to find out the truth. Meanwhile, Sachi receives a call from Shiori, who has been missing.
The results of the aptitude test that Shiori took to become a donor for Koharu are revealed.