Nanami and Kaede receive a wedding invitation from Aoi Tsujido. However, Nanami has something she needs to confirm with Aoi. It's about the truth of Kaede and Aoi's cohabitation period. Having heard the past stories from Kaede, Nanami doesn't think they are lies, but she suspects that there might be something 'Kaede hasn't mentioned.' On the night before the wedding, Nanami calls Aoi. "Have you ever heard the saying, 'What you don't know won't hurt you'?" she asks, but Aoi begins to share the past with Nanami... This is the start of Volume 7, as the story reaches its climax!