I was thinking about this in the context of a harem. I tend to find it annoying when so many characters all seem to be crazy in love with the main character with no personality. And so I wanted to look for a harem that has a reason behind it. I don't want force, the female characters need to choose it, but for any reason except love/lust.
Something like financial reasons work. Or if it's fantasy it could be some sort of magical reason to group up. It could be for access, or manipulation, or status. Anything really.
I'm also interested in non harem recommendations for the same. A woman gets with the main character but it isn't out of an actual desire to have sex with them.