輝「永琳とおそろいね！」
永「…喜んでもらえて私も嬉しいわ」
輝「ふふ、今日はこのままお散歩にでかけようかしらー？」

髪型を変えると気分も上々。女の子はそういうものです。

Kaguya: "It's just like Eirin!"
Eirin: "...It's a pleasure to do something that pleases you."
Kaguya: "H-hm, could we go take a walk after this?"

Change their hairstyle and their mood goes up. Girls are like that.