30 made Hitori Dattara Issho ni Kurasou tte Itta yo ne ?３０まで独りだったら一緒に暮らそうって言ったよね？; Didn't We Say We'd Live Together If We're Alone at Thirty?; Cậu có bảo nếu cả hai đều độc thân đến 30 tuổi thì mình sống chung luôn, nhỉ

I thought it was just a drunken promise: If we're both still single by 30, let's live together. Just before her 30th birthday and in the dead of night, a suspicious figure appeared at Tsukiko's doorit was Sora, the one whom she'd made that promise with. Not exactly glamorous, but surprisingly funa thirty-something cohabitation adventure From Takecomic.jp