: "Cakey" (Aina Yoshiwara) is officially introduced as the blue-haired girl from the opening credits, becoming a permanent part of the main group. Viewer Reception
: This episode highlights Chisa’s contrasting personality—being "cute and innocent" at school while appearing utterly heartless toward Iori at home. Grand Blue Episode 5
: Iori’s friend group, including the desperate Kohei, attempts to participate in a social mixer. The comedy peaks as the boys' "comradeship" turns into mutual destruction once they realize their romantic goals are failing. : "Cakey" (Aina Yoshiwara) is officially introduced as
The episode primarily deals with a that goes hilariously wrong, showcasing the series' signature blend of misunderstanding-based comedy and over-the-top character reactions. The comedy peaks as the boys' "comradeship" turns
: Fans widely consider this one of the funniest episodes due to the "betrayal" among the male friends and the "scumbros" dynamic.