Responses
Uh -counts- 9 wives, they all accept each other as sisters, although they were pissed when he kept adding women, but two were sort of forced on to his plate and he wanted to save one and accidentally helped another that if he didn't marry that one she'd end up dead.
Besides the few chapters that show their romance and lovey-dovey moments, it's practically 98% story. It's actually not focused on the harem aspect, but if even a little is too much, you can either skip them chapters or not read. The wiki for the series should sum up some of the story.
I looked at some pictures.
There seems do be romance. But is it only with one girl? Or does he sleep around?