Ruri Yukimura, who dreams of being a princess, refuses to acknowledge her older brother Yukimura since he does not meet her ideal image of a prince, which Usui surprisingly does. This gives Yukimura the idea that Usui should have a play date with Ruri. During the play date, Misaki, Yukimura, Kano and Aoi eventually witness Usui being a better older brother to Ruri, prompting Kano and Misaki each to interrupt the play date with Aoi's help. Ruri runs into a coffee shop and accidentally causes a cupboard to topple...