I don't know a lot of these kanji, so I'll just tell you what the options do.
Top box - Graphics Mode - Use VRAM or main memory
- 3D Mode - Uses your video card VRAM to prepare frames. Faster, less tearing.
- Software mode - Uses your main memory to draw frames. Use if you have a crappy or onboard graphics chipset. Slower since there's more processing between general RAM and the monitor output.
Second box - Screen settings - Fairly self-explanatory
- Windowed Mode
- Full screen
Third box - Quality settings (Press F5 to change mid-game) - This changes the number of frames that are skipped from being drawn in order to prevent slowdown. Wolf RPG uses a 2^x scheme for frameskip, so frameskip 1 only draws 1 frame for every 2 evaluated frames, and frameskip 2 only draws 1 frame for every 4 evaluated frames.
- High spec - Fameskip 0. Game will always run at 60 FPS but may slowdown if it can't draw frames quick enough.
- Mid spec - Frameskip 1. Every other frame is skipped, running the game at about 30 FPS.
- Low spec - Frameskip 2. Skips three frames per drawn frame. Game runs at about 15 FPS.
Bottom boxes - Background music and sound effects on or off.
Buttons - OK, Apply and Cancel
It's worth mentioning that every Wolf RPG game has this same config window, and you can also make changes to it by editing Game.ini directly.
There are also a few Function keys that have use in Wolf RPG games, assuming the developer didn't disable them for some reason.
F4 - Toggle through three different window sizes in Windowed mode
F5 - Change quality settings between the three frameskip settings outlined above
F8 - Display FPS counter
F10 - Pause execution
F12 - Reset game