Battle Moon Wars/English Patch
check it out here http://games.seiha.org/viewtopic.php?f=9&t=10
you can also find it online
it translates 99% of the game into english. as far as i can tell this includes the full plot, spirits, characters, attack names ect.
the only parts untranslated is some misc stuff. some remaining untranslated stuff will show a box of english dialouge explaining it if you mouse over the japanese text. this i assume is because some stuff was to much of a pain to translate in the very small room that was available. you should be able to play the game start to finish without any japanese knowledge.