Haruka invites Yuu to join her in attending a relative's wedding, which Yuu misinterprets as Haruka asking her to marry her. Although Yuu is disappointed that this is not the case, Haruka becomes touched by the thought of it. On Christmas Eve, Mitsuki joins Haruka and the others in visiting the Christmas lights, noticing that Haruka and Yuu seem to be shying away from each other. After Haruka and Yuu become separated from the others, Haruka reveals she had been shy to look Yuu in the face because of the strong feelings she's been having, with Yuu replying she had felt the same.
親戚の結婚式に参加することになった春香は、出張で参加できない父親の代わりに優を誘うことにする。電話で「来週私と一緒に結婚式行かない」と伝えたところ、 寝ぼけていた優は自分たちが結婚することになったと勘違いし、大いに慌てる。結婚式当日になっても優の勘違いは解けないまま、ドレス選びや春香の母親への挨拶が進行。 いよいよ春香との結婚が迫っていると勘違した優は、ますます緊張し出すが…。
하루카는 유우에게 사촌언니의 결혼식에 하객으로서 함께 갈것을 권한다. 그러나 유우는 그만 하루카와 자신의 결혼으로 착각하고 마는데...
