Inner Senshi

Inner Senshi is a fan-coined term referring to the five original Sailor Senshi: Sailor Moon, Sailor Mercury, Sailor Mars, Sailor Jupiter, and Sailor Venus, as opposed to the Outer Senshi who appeared at the start of the Infinity arc (Sailor Moon S).

Sailor Chibi Moon is also considered a member of the Inner Senshi by some, though in the manga timeline, it was suggested that she was the leader of the Asteroid Senshi.

In the manga, the term used to refer to Princess Serenity's four guardians was "Senshi of the Four Guardian Deities."

A similar term, Senshi of the Inner Solar System, was used in the Sailor Moon musicals to refer to the four guardian Senshi.