DaofatherWar short answer; yes its a harem.
Long answer ; Wait, what? Spoils the ending? Really? Are you sure? Hmmm... okay then.
In the end, the MC end up with more than 2 girls and they have kids, live a happy and richful life together in place for rich people.
What? Its not detail enough? Just read the last chapter of the novel then. The detail is there. Although Im guessing some name would be unknown to you since some of the latest harem member are kinda late to join the membership. (Around the few last hundred chapter entry)