before reading. can someone tell me whether this is harem or not?

No harem at all, just one girl
I’m up to date with the novels and still, just one and only best girl.
And if I’m not mistaken, there’s no polygamy in his kingdom.

Hey which chapter is this current update in the novel? Thanks in advance!

No problem, this specific manga chapter, it’s the end of the prologue of volume 3 in the novel, “Arriving at the battlefield, Begrudgingly” (⌒▽⌒)

Thanks a lot!