looking for a fiction book about cultural erosion, assimilation tensions, newcomers

hi everyone! lately I’ve been thinking of how communities change when different cultures meet – something that is happening to my hometown – and I want to understand this in a more nuanced way, without reducing it to politics. I’m looking for stories where:

• a group of people moves from a struggling or unstable place (let’s call it B) into a more functional or desirable place (A)

• the newcomers appreciate A but still bring habits or behaviours from B that slowly start reshaping A – sometimes unintentionally

• the original residents feel like their home is changing faster than they can adapt, and they don’t know how to talk about it without sounding hostile

• the tension isn’t about good vs bad people, but about cultural friction, identity anxiety, mismatched expectations, and how societies cope with change

• ideally the story explores the psychology on both sides

I’m not looking for books that demonise any real group – just well written fiction that deals with assimilation struggles, cultural blending or cultural loss, unintentional social change, what happens when a place starts becoming more like the place people wanted to leave, communities trying to preserve their norms without hostility.

it could be speculative or grounded in realistic settings.

if you know any novels that handle this theme thoughtfully, I’d love your recommendations! 🕊️