Kind of habit of mine, I will stick small as possible but then get inspired and write a lot then so it's kind of in flux. It's true that Mibu clan would kill traitors, but they unlikely do so with Tashi as he has true red eyes. But he gets no doubt punished some fashion.<br/><br/>But in plus side; red eyes as kenkei genkai is tricky pony to try ride (true there are no rules for 'gradual madness' from using the red eyes but I thought it fits on fluff of the clan). So even if it's stolen, the clan knows quite well that the clan who stole the kenkei genkai may regret it as person who manifests them can go murderous rampage as no one else in clan has red glowing eyes....nothing would stop the killer and so they are forced detain or kill the subject.<br/><br/>While if true red eyes manifests.....then clan would be<em>furious</em>but some may then take it as opportunity to 'study' how genetics of parents interacted and then figure finally a 'formula' how reproduce the effect instead just guessing it. Even if it came with cost that Mibu clan no longer holds monopoly of true red eyes. Also it may result in automatic merge of two clans if it's figured out that only couples from Mibu and X clan produce true red eyes.