This after story is somewhat of a bridge between Cinnamon Buns and Princess, the sequal. If you're going to read Princess you have to read this or you'll get somewhat confused.
Bunny and Darien
Bunny and Darien got married as soon as Galaxia was defeated. They ascended to Crystal Tokyo. At age twenty-two, Bunny took the throne and accepted the title Neo Queen Serenity, giving up her name as Bunny. A year after that Rini was born.
Mina Aino
A year after Bunny and Darien were married Mina met a businessman named Tadao. Soon after they got married. The two ascended to Crystal Tokyo to serve Neo Queen Serenity and King Endymion. Their first child was born five years after Rini. Mina and Tadao named her, Michiko.
Amy Mizuno
At Bunny and Darien's wedding Amy met a kind and generous scholar named Toru. At the same time Mina met Tadao, they got married and ascended to Crystal Tokyo. Five years after Rini was born, Nariko was born to Amy and Toru
Lita Kino
After going to Bunny's and Amy's wedding Lita realized how much she loved her old boy friend. She had always talked about named, Raidon. She found him at Tokyo University. Surprisingly he had been looking for Lita too. The two got married shortly after Mina did. The two ascended to Crystal Tokyo later that year. When Rini was five Lita gave birth to her first child, Kaede. Nine years later she had a second child named Kohana.
Ray Hino
At Lita's wedding Chad finally proposed to Ray. She accepted and the two ascended to Crystal Tokyo. Four years later Chad and Ray had their first child. They named him Michael. Three years after that they had their second child named, Kimiaka.
Setsuna Meieh, Haruka Tenoh & Hotaru Tomoe Sure they weren't in the story but they've got a future too!
Micharu, Haruka, and Setsuna never married or dated in their time in the twenty first century. The three went with Bunny and Darien to Crystal Tokyo at the same time to start their duties again.
Michiru Kaioh
During one of Michiru's tours she met a fan named Kazuo. A year later they were married. The two left for Neptune a week later. Soon after Michiru gave birth to twin girls named, Ayme and Sakura. A year later she gave birth to another set of twin girls, which she named, Keiko and Choyama.