Mugen Senshi Valis is a Japanese platform game series developed by Telenet Japan.

The Valis games (as they were known in America) tell the story of Yuko Asou, a Japanese student of the late 1980s that is bound to protect three different kingdoms - our own land, the land of the Spirits, and Vecanti, the world of dreams, by using a mystical sword called Valis.

This short anime clip was made as TV commercial for the Nintendo Famicom game.