Testing customized Glyphs for buttons

After years of procrastination, I decided to see what it would be like to use custom glyphs for the buttons in the IKEMEN GO options. Honestly, I still prefer to use plain text but that's one of the possibilities of the engine.
If you don't know how to do it, the button icons are simply part of the font. For example the "up" button uses the ʰ glyph (0.688 in sff) and so on.