The true ending for Kagetsu Tohya can be really hard to get and if you don't get it on the first try you'll have to erase your global.sav and redo the game from the beginning (though it's sometimes possible to get it by reloading an earlier save, depends if you have any save that has the correct "game slate" so you'll be able to set the flags.)
So it definitely needs a walktrough. You could probably use this one and modify it a bit since it was made pre-translation.