L5R: How to Swim
Things That Do Not Exist -
The Yasuki are still a family of the Crane, not the Crab.
The Unicorn (still the Ki Rin at this point) will not return to the Empire for another 600 years or so. As such, none of their schools exist. Their lands are currently maintained by the Lion, specifically the Matsu, having forced the Fox (the remnants of the Ki Rin) out of the territory over 200 years ago. The Fox still bear a grudge.
The Mantis are still in their infancy and not yet a recognized minor clan, and are of no importance to anyone save a few sea traders.
The only minor clans currently recognized are the Fox, the Centipede, and the Badger.