is there any guide for this game?
Viewing post in Lust Odyssey (NSFW Visual Novel) comments
There is -- it's the mythicheroes link at the bottom of the game description -- though it's missing a lot and some of it may be from older versions.
EDIT: The text of that link is the the correct URL, but the hyperlink itself goes to the wrong place. So, copy the link text instead of going to the link directly.