Focus on intimate bondings with Monster Girls

A vague idea that crossed Smith's mind when he read the Bicorn Monster Girl page in the Encyclopedia. He never really thought about it till now. With the help of multiple monster girls, his journey will be really easy. He doesn't have anything against them like the Order, in fact, he finds most of them quite attractive.

However, at first he felt that this was a very selfish idea, so he had conflicted feelings about it. Until he realized that he was dealing with Monster Girls, and with them, sometime morals and modesty were none of their concerns.

But Smith didn't really know if he could love two or more girls at the same time. He was only sure that he would try his hardest to shower all of them with passionate and sincere feelings. After all, if many Monster Girls expressed their feelings of love, he thought it was the least he could do in this situation.

Now how exactly can he start a harem? The only clue he had was that it far easier with a Bicorn by his side. And he just remembered a legend about Unicorn monsters in a forest near a big city, not too far away from his town, but still a one week trip to go and then come back.
He could also try to be a charming young man, and go around the town seducing monster girls, something he's not very fond of doing,