Their summer overnight trip over, Haruka and her friends find the deadline to select their partners for the graduation audition waiting for them.

However, the more Haruka learns about their earnest feelings, the less she is able to choose a partner.

The situation takes a turn for the worse, and the atmosphere at school grows increasingly awkward...

随着毕业的临近，大家都开始有所行动。音也、莲、翔和那月都主动找到春歌，当面邀请她做自己的搭档。真斗也给春歌写了一封信希望她能考虑做他搭档。时矢虽然没有说，但是内心更加确定了将春歌作为搭档的不二人选。六位偶像的候补生因此展开了暗中的较量。为此春歌十分的困惑，求助小友，未果，转而求助林檎老师，但是老师却说又有一位同学选他，竟然是一之濑时矢。