right this game is kind of impossible in the English AI patch. On the 4th dungeon you have to put a password in thats in Japanese and it gives you Japanese characters to input the code.
Its something like 'love big boobs' or 'oppai daisuke'. So I've used google translate to get the Japanese characters to match it but I seem to be missing one character on screen. So I just dont know what to do with the last 2 characters. Kind of soft locks you. The devs should have really gone over the translation with a fine tooth comb, Im not expecting perfection but at least make sure game progression isnt affected. Glad I didnt pay
{{EDIT}}
Right after about 25mins of working it out, using google translate. The Eng patch cant understand the password properly. It mixes both english letters and Japanese, sometimes it adds 2 characters together.
The only way to bypass the door is to launch it in Japanese version. Every note you read, get your phone and snap a photo of it, then you are getting a clear picture of the character because some look very similar and will confuse you. 2 characters at the bottom corner changes the letters to english but ignore that. The other on the far right just means OK. Once you got the door open, save and launch the Eng version.
That was not easy......