OK. So there's 7 great clans plus a number of minor clans. Each clan has several (more or less) important families. Got that.
How does the Emperor fit into that scheme?
Is the Emperor from a specific clan, or does he (& his lineage) transcend clan? How about his family? Assuming he/they are not from a clan per se, are there a bunch of people in this royal non-clan "clan" in service to him, or is it just a relatively small # of folks (immediate family) and all (some?) of the clans supply the lesser nobles and others that directly serve him?
Just trying to understand the structure and relation of the Emperor and the clans.