Kvadrug is divided into its two main forms: Xtrovert and Hikikomori
 
The square represents the basis, the points inside it represent the cavities.
 
Due to its "hikikomori" structure, we can completely join its glyphs. By
doing that, we can create a huge pattern-like typeface that would seem like
an ordinary decoration to an ordinary passerby.
 
Here's a trick for easier reading - imagine that the circles are bombs that
create a larger hole in the glyph when they explode. What remains should give you a clearer picture of which glyph it is.
 
- Species division:
By rim thickness: regular and thin;
By tone: regular (monochrome) and colored.