Okusama ga Seitokaichou!+!

Hayato Izumi continues balancing his duties as student council vice president with sharing a home with Ui Wakana, who considers herself his fiancée because of an old agreement between their families. Their contrasting personalities make even an ordinary day difficult to navigate.

Complications follow them to school, where competing feelings, Rin Misumi's concern for discipline, and the student council's eccentric members generate fresh misunderstandings. Familiar relationships become harder to keep neatly separated as jealousy and affection grow. Hayato and Ui must manage the expectations surrounding their arrangement while gradually confronting what that relationship means to each of them.