Riri is an anthropomorphic cat featured in the series alongside Popo. Her defining trait is being menhera, a Japanese slang term denoting mental instability and emotional volatility, which manifests through obsessive devotion to a specific female idol. Despite this intense fandom, she remains unblessed by the idol, implying her passion yields misfortune or unfulfilled desires. Her volatile personality starkly contrasts with Popo's airheaded, devilishly cute demeanor. Together, they navigate short adventures centered on everyday geek activities and promotions, reflecting idol culture and otaku fandom themes.