Oh right, I almost forgot about this. Tired. Too much 140 Mafia. D:
Aibu Saki's birthday is on the 20th, which, in Japan time, is tomorrow. So what, right? Well, people are keeping their eyes on that date because it could mean marriage for her and Nagase. Perhaps an announcement, perhaps marriage registration, who knows. Perhaps even... nothing!
Also, if we want to further this theory, in a couple months Okada Jun'ichi and Aoi Yu may also be getting hitched on her birthday August 17th. Although Coming Century is touring this summer the trio will be on a break that day (and several other days, so it's not that huge of a coincidence). So, nuptials pending? Big marriage announcement at Kamisen concert? Who knows.
source:
芸能7days