Chapter's so short it didn't even arrive at the opening teaser's scene yet... well, it's good so far, at least.
Most types of "slave harem" manga/novels don't interest me. There's...
1. Straightforward slave harem like the eponymous one, where MC casually buys slaves or is a Maou who enslaves girls in self-defense, and has sex with them, and they're grateful at him for being such a kind master or whatever, and they usually have little personality because they're whatever heroine archetype the author felt in the mood for and mostly quickly forgotten.
2. "Reluctant" slave harem like Death March, where the MC just ends up buying a few slaves at one point and they easily fall in love with him and/or treat him like their papa, but he's too shy to do much with them.
3. Fake slave harem like Isekai Maou to Shoukan Shoujo no Dorei Majutsu, where they don't even adopt the role of slaves.
It sounds like we have a protagonist from #1 but the buildup will be slower (less shallow) since he's too shy to admit he wants to have sex slaves, and probably heroines from #2...? Which seems like a potentially fun combination. It all depends on the author...