Atom Heart Father, Part 5 (アトム・ハート・ファーザー その⑤ Atomu Hāto Fāzā Sono 5), originally The Tenacity to Try and Survive! (生きのびようとする執念！ Ikinobiyō to Suru Shūnen!) in the WSJ release, is the one hundred fourth chapter of Diamond is Unbreakable and the three hundred sixty-ninth chapter of the JoJo's Bizarre Adventure manga.
Yoshihiro has taken the Bow and Arrow hidden in his house and, before Josuke can react, escapes the house through a crack. Josuke explains what happened to the group, and they hear a crow flying away with Yoshihiro tied to its neck. Before getting out of sight, Yoshihiro gloats and declares that with the Arrow, he is going to make Stand users to stop them from finding his son. Okuyasu once again laments his stupidity, but Jotaro reassures him, as the Kira family simply possesses extraordinary cunning and tenacity. Accepting the fact that there are multiple Arrows in the world, Jotaro fears what Yoshihiro will be capable of with it.
While flying, Yoshihiro cries for his son's misfortune, and the crow's dropping fatefully lands on the mailbox of the Kawajiri household. Kosaku Kawajiri is home, but his wife Shinobu Kawajiri doesn't greet him as they are in a loveless marriage. Shinobu, unsatisfied to have settled with someone as uninteresting as Kosaku, takes a petty form of revenge by mistreating him. She merely left a pack of instant noodles for Kosaku's dinner. However Kosaku begins to prepare and cook a meal by himself, taking Shinobu by surprise. While Shinobu is surprised by how good the meal is, Kosaku ominously clips his nails.