Does anyone know, if this has Harem? Or any signs of Harem?

Okay he does have a lot of princesses in his castle but so far, nothing untoward and super cliche has happened between any female character and the MC. If anything, he’s really only looking at how to best use every princess he captures. But that’s just so far!

There's for sure romance because the novel on NU has a "romantic subplot" tag, but there's NO harem tag, and there's no sign of it either so far. I'm betting that the first princess is gonna be the sole female lead (I wouldn't complain because I love her)