The Tale of Genji is a classic japanese novel, probably written more than a thousand years ago. The 19th century artist Toyohara Kunichika painted a picture for every of the 54 chapters.
Every picture is showing an open book, on the pages of which a glyph is repeated. For each chapter, a different glyph is used (also referred to as crest or Genjimon). There is a system to their creation.
Examples from two different chapters:
Can you make out the system and the 'mistakes'?
Edit: It is not necessary to know Japanese. Do not base your deductions on the summary linked to below, the representation of the brushstrokes is deceiving. Use it only to identify the indistinctly painted glyphs. The order of the glyphs is of no importance.
If you find it too hard making them out, view this glyph summary.
Intersections should be interpreted like this:
Certain glyphs are duplicates in terms of the system.
My lucky number can be found here.