Overall, really like it so far. Love the character and relationship development, especially for Victoria and Sarah. It does a pretty good job (given some leeway for being an ero fiction) of protraying BDSM in a positive way, and being pretty consent forward with a lot of examples of how getting consent can be sexy and incorporated into play. I also like that every love interest is different, and has an at least somewhat different dynamic with the MC - even in polyamorous relationships, each relationship dynamic can and should be different. That makes the story much more engaging than a lot of harems where the characters and relationships feel basically the same, at least after things are established.

I have only like 3 minor critiques.

1st and most minor: I think the MC says "good girl" a little too readily to some people. He multiple times says it to someone before any sort of D/s dynamic has been established and before its clear whether they would want (or be ok with) him to use that kind of term with them. Relatively minor, though, just occasionally takes me out of the story for a moment.

2nd: I periodically realize that the MC has only been in town for about a month, and then laugh a little at the idea that all this has happened in such a short period of time. He arrives in town, opens the cafe and establishes a pretty high amount of business, develops a harem that now includes 4 collared subs as offical girlfriends, and 4 other partners that are budding relationships at varying levels of romance and sexuality, and he gets deeply involved in local intrigue and politics. It makes perfect sense that Vicky would be concerned about him being stretched thin (glad you put that scene in there, by the way). Don't be afraid to put in some time skips here and there so that some things are weeks apart instead days.

3rd: Probably my biggest critique: The MC never gives oral to his girls. It seems a bit unfair, and honestly a tad unrealistic for the character, given that he cares about them and their pleasure and doesn't seem to portray any macho insecurity behaviors. It makes some of the scenes feel too oriented toward his gratification rather mutual play or power exchange. As a dom, there is a lot of fun to be had tying your girls hands and edging her with your tongue for half an hour until she is desperate - or from making her cum over and over again until her abs hurt ;-). Letting the girls cum more outside of PIV sex would also just make for more variety of scenes and allow the MC to play with them more without needing to ejaculate an unrealitic number of timesper day.

Overall though, I really like it so far, and look forward to more.