The Guardians of Old is the ninth episode of Tenchi in Tokyo.
It originally aired on May 27, 1997 in Japan, and on September 6, 2000 in North America.
While on a field trip to a archaeological dig, Tenchi and his two friends fell into a underground hidden Forrest where they encountered two floating logs who almost resembled Azaka and Kamidake, who are keeping an eye of a demon. Meanwhile after successful entering the tunnel and closing it to make sure Ryoko doesn't follow, Ayeka left to the dig to spend time with Tenchi.
- Tenchi Masaki = Masami Kikuchi (Japaneses) Matt K. Miller (English)
- Ryoko Hakubi = Ai Orikasa (Japaneses) Petrea Burchard (English)
- Ayeka Masaki Jurai = Haruhi Nanao (Japaneses) Jennifer Darling (English)
- Sasami Masaki Jurai = Chisa Yokoyama (Japaneses) Sherry Lynn (English)
- Mihoshi Kuramitsu = Yuko Mizutani (Japaneses) Rebecca Forstadt (English)
- Kiyone Makibi = Yuri Amano (Japaneses) Wendee Lee (English)
- Washu Hakubi = Yuko Kobayashi (Japaneses) Kate T. Vogt (English)
- Goof: When Ayeka is first seen at the dig site, she is seen wearing brown boots but later on she appears wearing her sandals.