Board Thread:Improvements and Issues/@comment-5355747-20130313062554/@comment-11051098-20130622011518

Yhwach himself seemed to look at Ichigo as a "son", for being of his Quincy heritage - although that would probably go for every Quincy. Technically Ichigo would be Yhwach's "30 x great"-grandson, or something like that - 1 generation is considered 30 years, as far as I know.

But you must also consider that Ichigo comes directly from yhwach, in a straight line, as a veeeeeery distant grandson. It could be explained as a vertical line, while cousins, descending from 2 siblings from the same generation, are more like relatives in a horizontal line.

Hope I made myself understandable.