i know it's not easy at first time all doing stuff, using with a tool but trust me after know where to replace strings files are like nothing.
at first you must change your region language to japanese computer with this are easy to see where dialogs are there, with that tool resourse hacking i used before posting screenshots and got mail by not continue this because i wanted to translated this maker for good reason. also the developer released a sort of source code translated version of wolf rpg editor i added to my journal, he's a troll im not sure why.
yes and you found in in options trought control panel and click a file called country an language all to do is go to option called administration's option then click the second, select japanese then pres ok the computer will reboot it's self and that's all.
don't worry the english stuff is there and you can turn back anytime you want.