Parent and Child (親と子, Oya to Ko) is the name of the fourth chapter of the Bakuman manga. It was published in Weekly Shōnen Jump on September 8, 2008.
Mashiro finds the letters his Uncle wrote to the girl he loved in a closet full of manuscripts. The last letter says that she is going to get married and that she won't write anymore after the wedding so she apologizes. Then, they find out that the girl was Azuki's mom. Takagi and Mashiro meet Azuki's mom. They tell her they are sorry for reading her letters. Then Azuki's mom admits loving Mashiro's uncle but she was too embarrassed to say anything to Nobuhiro. She believes his uncle's gag story was based on how Kawaguchi Taro felt. Mashiro tells Azuki's mom that he doesn't want Azuki to know about the letters between his uncle and her.