HORIZON by Fran Wilde

A new review over at Tor.com:

The things I’ve liked best about Fran Wilde’s Bone Universe books—2015’s award-winning Updraft, last year’s Cloudbound, and now the trilogy’s capstone, the compelling Horizonhas been the character of Kirit Densira, accidental hero, accidental city-breaker, and determined friend; the weird, wonderful worldbuilding (invisible sky-squid that eat people! enormous bone towers in which people live far above the clouds! a society based around unpowered human flight!); and the deep concern with consequences.

Horizon is all about consequences.