By the way, it's possible to mod the game by using the Fighter Maker 2D Editor, here:
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I've only used it to nerf a couple of player characters, since the game is quite easy, but here is what I did:
- Download the Fighter Maker 2D Editor on the link above and extract it somewhere. I used the English version. Some people on the link comments complained of trojans, but my antivirus detected nothing, and I had no issues so far. Myabandonware also seems somewhat reliable. Use your best judgement
- Open the file KGT2nD_EDITOR.exe and create a new game/project
- Go to the ff/ folder and take a look at the 01.player to 20.player files. Those are the player character files. For example, 01.player is Azukina
- Make a backup of the file you want to edit, and open the .player file you will change with a hex editor
- Change the beginning string of the file from "2DKGT2G" to "2DKGT2K". This is the edit "protection" of the file. If you don't do this you will receive a message saying "Cannot open the game file which was drawn up." when you open the file on the editor
- Copy/move the edited .player file to the folder of the game/project created on step 2
- Go to the FM2D Editor, open your game/project, go to the "Player" tab, right click on the blank column, and click "Add > Player From File"
- Make your changes, and before putting the .player file back on the ff/ folder, change the hex string back, from "2DKGT2K" to "2DKGT2G" (before making many changes, please read below, for your sanity)
The whole thing is a bit finicky. The Editor is in English, but the game data is in japanese, and some screens show the proper japanese characters, while others don't. When I tried to edit the characters HP they insta-died on the game mode selection screen. What's even more mysterious is that for some reason, sometimes when you edit the .player file, save it, and put it back into the game, the game will reset when you choose your character. I don't know how to consistently fix this, but what I'm doing is opening the .player file on the editor, making a change, then reverting it (so that I can save a "modified" file without any changes), and then doing the rest of the process. If you put the edited file on the game and it doesn't reset when you pick your character, you should be fine to edit it further without headaches.
There's a decent manual in English that comes with the download from MyAbandonware, so it's quite possible to be proficient at this thing.