I get what you’re saying. The past action between one family led to the hatred the towards individual characters wanting revenge and hatred towards kozkui. This why characters like orochi and kanjoura had conceal there Identities from kozuki clan. As result they took advantage on those around them wanting revenge. At same time they had conceal there hatred towards Ill will of kozkui family. This gave rise orochi and Kanjoura. Sukiyaki (oden’s father) felt sorry for what his family did to Orochi’s family. As result oden’s father made him the place holder to be shogun until oden would eventually return. He did take advantage oden’s own family as well the people of wano. You could say oden in some way felt sympathetic in some way he thought orochi and Kaido could have code Honor within themselves as there own characters. As result he try give them the benefit of the doubt. He was trying his best save the lives of many in the process by acting silly for 8 years. It was already to late for orochi to forgive oden’s family. So ended up betraying his trust. Yamato has bloodline criminal she was lock away from father organization for 20 years. Being moved by Oden sacrifice the way he is life. Brought her to tears that he did something very honorable that no one else would do in there position. This influence her take on oden last request after he died. She end up finding out the truth from luffy that vassel of oden are still alive she was completely stunned and shocked by the result. She wanted help them the best way she can. Yamato feels ashamed that she couldn’t do anything to help momo from previous circumstance from 20 years ago. Now she has power to back momo up. As said, before is going take some times for the wano citizen fully trust her as her own individual person at end result. Since she is virtually unknown and descendent of that person that ruin their country 20+ years. Once boarder of wano are open to the rest world people are going know who Yamato is as character. Would this cause her leave or stay wano? That hasn’t Yet been revealed just yet. As I said before she has shown interest of wanting to go out to sea. However, could this event could change her mind? Will have to wait and see. I kind compare and contrast Yamato late introduction similar to Katkurai. The only differences one is an ally while other one antagonist.