On a snowy day, Haruka and Shizuku go outside to have their lunch, though soon find it a bit too cold. As Shizuku dreads the day when she'll have to part ways with Kotone, Haruka brings Kotone over to cheer her up, encouraging everyone else to come out for a snowball fight. Meanwhile, Kaede mentions to Mitsuki how she believes Haruka and Yuu are dating. Later during gym, Haruka feels the need to compete against Kaede in jumprope, only for her group to end up coming last and having to clear up the equipment. As Haruka offers to do it alone and the others leave, the teacher assumes they were finished and ends up locking Haruka in the gym storage. Learning of Haruka's disappearance, the girls set up a ladder to the gym storage's window, where Yuu manages to get a kiss with Haruka, before they manage to get the door unlocked.

春香因为下雪十分激动，于是午休时兴奋的春香邀请大家一起在外面吃午饭，结果除了雫其他人都因为下雪太冷拒绝了春香的提议。随后来到操场上欣赏雪景吃饭的春香与雫，因为美丽的雪景陷入了伤感中，看到雫对自己与琴音未来的担忧，春香悄悄找来了琴音。在琴音刚刚安抚好伤感的雫后，大家都来到了室外并且玩起了打雪仗……

珍しい雪にはしゃぐ春香は「せっかくだから外でお昼を食べよう」と提案するが、みんなは乗り気でない様子。唯一同意したしずくと二人外へ出た春香は、「三年間を大事にしたい」「この景色を目に焼き付けておきたい」との話をする。改めてしずくとコトネの関係と境遇を思い知った春香は、やはり雪の中思い出づくりをしておきたいとみんなを呼びに教室へ戻る。一人残され、卒業後のことを考え涙を流すしずくの元に突然コトネが現れて…。