The Aspect Emperor Series
I finished books 4 and 5 in three days. The temptation is to say that the series is underrated, but that would seem to be a faux pas given the number of people who recommended it on reddit. I suppose part of the urge stems from the criminal lack of art associated with what is a truly brilliant world conceptualized by R. Scott Baker.
Book 6 comes out in August. I can’t wait.