Yuna Kagurazaka is a somewhat ditzy 16-year old girl. After winning a "Galactic Bishōjo Contest" (Galaxy Fräulein Contest, similar to Idol contests), she becomes "The Savior of Light", a magical girl charged with defending the universe from evil.
Galaxy Fräulein Yuna is digital comic game (visual novel type).
The game has no game over (can infinitely continue) or bad ending, similar to story-telling digital comic books or interactive movies.
Move somewhere, talk with somebody, then fight against the 13 Fräuleins of Darkness...
Combat scenes are played out in turn-based RPG style, but there is no EXP or items – only attack or defence.