In the language of flowers, Wisteria generally symbolizes things such as everlasting love and devotion, but in Japan specifically, it is a symbol of good fortune and a very common WEDDING gift.
From these facts we can derive that our notorious sex criminal Anon Chihaya (千早愛音) is in fact proposing and fully prepared to immediately consummate her marriage with Soyo Nagasaki (長崎そよ) as soon as possible, before her efforts are foiled by an evil little feline creature. Who knows what kinds of depraved actions Anon may have taken had the remaining members of MyGo!!!!! not arrived in a timely manner... One can but only dream...