5/31/16 (update): Found a walkthrough online but it's in Japanese. I translated the last part for 'closure' lol..but could have avoided all this work if the game itself was in English.
5/28/16: Yet another Japanese game where app description language says English, and game is in Japanese only. All menus and help text are in Japanese. This is really good..I was able to play thru to the last part (the dragon) but if he kills you it's game over. Apparently there's a choice to continue and try again which I hit on by chance (since I can't read the Japanese options).. Got a game over again and hit the wrong choice on that one which reset the game to the beginning. Ugh..so close..but chose to delete rather than start over.