The six months that have passed since the funny and exciting events of summer camp described in the TV series have only strengthened the love feeling between Futaba Kutsuki and Yusuke Takazaki, although the memories of Midori, who has gone to another world (another dimension?), do not leave the boy. And so, to prepare for the impending merger with the Girls' School, the sisters Futaba and Wakaba arrive at the Bellringer with teacher Tigusa, along with baby Sanae - to the great joy of Yusuke and his three ballbuster buddies. During this short visit between Futaba and Yusuke, the thing they've been waiting for finally happens, and the spirit of Midori hovers over the happy lovers with a smile...