Two years later, after Rin graduates, Daikichi gives in and they become a couple.; Rin confesses to Kouki that she isn't interested in romantic entanglements and is only interested in being Daikichi's daughter and caretaker. Kouki takes that to mean she has incestuous feelings for Daikichi.; Confused by her feelings for Daikichi and his reaction to them, Rin seeks out her birth mother for advice.; Kouki confides his suspicions to Daikichi. Rin overhears and the Kawachi household suddenly becomes very tense.; Kouki tries to convince Rin that her current course isn't the course to happiness.; Seeing Rin's angst over her impossible relationship with Daikichi, Masako reveals that Daikichi's grandfather was not Rin's father and that she and Daikichi are not related.; Based on Masako's revelation, Rin wants to start a romantic relationship with Daikichi. But he puts her off, asking for the time until her graduation in two years to decide.