The Splinter in the Sky by Kemi Ashing-Giwa

 

A pretty wild very-far-future SF novel, with lots of humanity's deepest sins--empire and conquest and colonialism foremost. It struggles some in the early-middle with twee and I think a bit of muddle in the setting, but it very much mostly sticks the landing. Atonement for the sins of the past is possible, and the path there is well-placed loyalty and love: familial, friendly, romantic (often queer); I cannot muster much argument with that.