Hayato maintains a "perfect" social atmosphere, which Hachiman views as fake and fragile. Contrasting Morals:

Believes in finding the culprit so they can face their mistakes and grow.

This episode introduces Hachiman’s sister, Komachi , who provides a grounded contrast to Hachiman’s extreme cynicism. 📂 Alternate Interpretations

Focuses only on the outcome; he is willing to be the "villain" to end the conflict quickly.

Hachiman realizes the messages are related to an upcoming three-person group project. Since Hayato's group has four people, one member is sabotaging the others to avoid being the "odd one out".