Good series, worth reading
Book 1 sets up an excellent arc, book 2 has incredible world building, book 3 explains helpful things, book 4 wraps everything up in a satisfactory ending. There is an occasional curse word, random allusions to God and idols, and the last third of the third book stops building tension and simply moves it back and forth, which is so exhausting to push through that the climax is anticlimactic due to allocating all the energy to just watching the plot ping pong for over an hour. However, the romance is well written, exciting and clean. The characters grow, they maintain the integrity of their personalities, and the story arc is engaging. Overall, I recommend reading the series.