It's another of those hentai series that also got a cut-down TV broadcast. I enjoyed it. (This is a review of the uncensored episodes, incidentally, not the three-minute TV ones.)
Its first good move is to have a likeable cast, healthy relationships and nothing abusive or rapey. Keisuke is Saki's boss, yes, but that's got nothing to do with anything. He doesn't abuse his position and he's never unprofessional. The show's few workplace scenes are where he's seen at his best, in fact.
Secondly, it's funny. I laughed.
Thirdly, the show's only got 8 episodes, not the usual 12 or 13. This spares us some of the usual plot filler, e.g. wheel-spinning hostility and "no no no no yes". The show can proceed more sensibly. Keisuke and Saki have full sex in ep.1, for instance, whereas normally that doesn't happen until halfway through. There are still some eye-rolling plot points, but fewer than usual.
(a) When Riku Narita first meets Saki, he puts her hand on his penis and gropes her boobs. They're in a public place. Keisuke underreacts on finding them... but then, later, will generally rise to Narita's childish challenges even when you'd have to be an idiot to do so. That's part of the joke, admittedly. This is a comedy and he is indeed being an idiot.
It's still a forehead-slapper, though.
(b) Ep.7 goes in for "penultimate episode contrived jeopardy" silliness. Mind you, Narita made its resolution in ep.8 more interesting than I'd expected.
Anyway, the premise is that Saki Watase is an office worker who's taken a a side job as a product tester. She gets sent lots of XL-size condoms. Whoops. She doesn't have a boyfriend, let alone one that "gifted". She doesn't like her boss, Keisuke Sudou, and his lectures... but then one evening she gets steaming drunk and he helps her home.
"What's that on the floor?"
It's a well-worn sex comedy formula, but the characters make it funny. Being hentai also improves it. The sex jokes can be more specific and actually go somewhere, while furthermore the sex scenes have a purpose. "Do your review!" Subsequent episodes keep up the gags. "Your phone is buzzing."
It's only sometimes a comedy, mind you. Only half the episodes had a joke, but that's not bad. Besides, the show could make me laugh with simple things like Saki's face when Keisuke tells her not to waste money in ep.7.
There's a relationship journey, despite starting with full sex. They're not boyfriend and girlfriend and they're both very aware of the fact, despite things like Saki's hurt reaction in ep.3 when she thinks Keisuke's answered for. Saki's a product reviewer and Keisuke's helping. (He refuses when Saki tries to give him half her pay in ep.6, though.) It's clearly a romantic relationship and the pair need their heads knocked together, but they'll get there.
Would I recommend this show? Dunno. Well, it's short. It's probably not a keeper, but it's warm, enjoyable and funny. You could do a lot worse.