- Consider this. For Yato, there is no way to defeat his Father without ensuring his own demise. It's even more painful when said Father is an abusive sociopath.
- The flashback of Yato's childhood. He and Nora killed people as a "game" bringing their ears to Father. One of the panels displaying their massacres had Yato innocently wondering why a woman they killed had a person in her belly.
- The little hints we get of what happened to Yukine when he was alive. His own father possibly killed him by burying him alive.
Nightmare Fuel / Noragami