Gdleen

Due to spacecraft failure earthlings Ryu with computer robot "MOS" landed on self-navigated planet Gdleen. There Ryu meets a cute Euradonian fairy Fana. At that time, the planet was in the midst of a dispute over a Gavana temple. Self proclaimed God Gavana captured Fana for a sacrifice. Would they be able to escape? And what the identity of Gavana?!
(Source: Translated from gdleen.hatsune.cc)