There's three girls who are actually interested in the protagonist.
One of them is a magic shrubbery, that leaves two.
Two is more of a love triangle than a harem.
One of them is the obvious lead from the very first chapter though.
One is more of a romance if you ask me.
But the genre is comedy/action.
In other words, it sucks.
Or it SHOULD suck, but it doesn't.