"Sensibility and Thickheadedness"Hikari behaves strangely around Kei after Yahiro's party, unable to believe that he is in love with her, and refuses to tell Kei why. To determine where the S.A will go for their vacation, Kei suggests a contest where the winner decides - with the condition that if he wins, Hikari will tell him what Yahiro said to her at the party.