Azabu University was created in 1890.

Azabu High School was created in 1895.

Azabu Juban

The cast of Otoko girai - 1964 includes: Yukio Aoshima as Michio Katayama Keiko Awaji as Ikuko Takamura Jun Hamamura as Mamoru Moriya Bokuzen Hidari as Priest Atsuko Ichinomiya as Matsuko Katayama Natsuko Kahara as Mrs. Kojimachi Kazuo Kitamura as Kingo Ashida Fubuki Koshiji as Ayako Takamura Yoshie Minami as Mrs. Azabu Masayuki Mori as Masayuki Izawa Akira Nagoya as Ichiro Shin Mie Nakao as Mitsuko Taniguchi Sadako Sawamura as Mrs. Denen-chofu Noriko Sengoku as Kiyo Taniguchi Michiyo Yokoyama as Etsuko Takamura

The age of Tuxedo Mask depends on whether you're talking about the anime or the manga.

In the anime, he is stated to be in college and working various jobs part-time; this would put him at least at age 18, especially considering we see Mamoru driving a car and operating a motorcycle, something one would have to be at least 18 in Japan to do (note: Haruka/Sailor Uranus does it when she's clearly too young too; she makes a joke of it by claiming she as an international driving license).

In the manga, he goes to Moto Azabu High School and shows his ID to Usagi during a chance encounter on the bus, revealing he is a second-year student, putting him at about age 16-17.

In both the anime and manga, he departs for the United States to attend Harvard University in the fifth and final arc of the series. In the final episode, Usagi says she is a first-year high school student and 16 years old (most likely putting her at the end of her first year), which would mean Mamoru is at least 20 in the anime by series' end.