Aside from her outwardly feminine hobbies, Eriko was also interested in the occult. Because of this, she was excited to once again do the demon-summoning game "Persona" that her classmates were pulled into because of Masao and Hidehiko's silly bet. Eriko played along despite having done the game prior to see how her classmates would react to the result. She was nonetheless shocked to see her classmates forcibly sent to the realm bordering consciousness and unconsciousness after being hit by lightning. She expresses overly-ecstatic enthusiasm over the fact that her Persona is the "Goddess of Victory". Sometimes her love for the supernatural and experiencing new things related to it clouds her judgment of what is dangerous or not.