@Aangmj12 I need to correct you there first. Kure clan tradition involves not only selective breeding, but also techniques stealing. Their selective breeding do not follow deep inbreeding instead uses some outsider that is qualified for marriage to one of the clan members. This most of them are at least partially mixed.
Wu clan also follow the same tradition if we assume Wu clan is the main family with Kure clan as branch family.
@es_kan @KeiosKod
lolong's 'haven't you forgotten' , kazuo specifically didn't mention worm infiltrated kengan, but it seems like lolong knows about worm infiltrating kengan and is reminding them of it.
fei's line makes sense because kazuo probably mentioned worm imposters in his story.
I think it's Nitoku when Lolong said YOUR side he was clearly talking and looking at Yamashita and standing right next to him happens to be Nitoku. Ofcourse Masaki could be one aswell but that's too obvious and i personally think he isn't a worm.