Somewhere on f95 there's a tool called VNMakerBasicDecryptor (or something like that) which can decrypt the files. I think this game uses the engine's default encryption key, so decryption ought to be straightforward. (After editing the files you should be able to re-encrypt them the exact same way as you decrypted them. I.e. stick them in the input directory and tell the tool to 'decrypt' them.)
If any of the text is actually part of image files rather than actual text, then naturally you'll need to use an image editor to handle those after decrypting them.
For dialogue-box text, search the decrypted json.js files for each instance of the "gs.ShowMessage" command, and edit the text in params->message->defaultText.
For choice text, search for the "vn.Choice" command instead. Edit the text in params->text->defaultText.
For character names, search for files containing a line that says "category": "characters". I'm not sure if you just have to edit the items->name value, or just the items->data->name->defaultText value, or both.
If you see any text codes such as "{LT:1}" then probably let those be, but you can find what those mean toward the end of this page:
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. Also, in case you aren't familiar with general string encoding: be aware that the text "\n" is a line-break. I think the gs.ShowMessage command will automatically wrap text as necessary, so you shouldn't need to add any extra \n breaks, but I could be wrong.I think that's everything you need to know to start translating this game. But I say that based on like five minutes of looking through the game's files (plus pre-existing knowledge of the engine), so let me know if it seems like I've missed a necessary detail.
