Very good start.
Of course the setting isn't new, quite the opposite, but the characters are lively and likeable (except two jerk rich males but that is kind of their job).
Renders are very good and all kind of tastes in women are covered: the hot blondie, the sweet asian, the snooty rich and ridiciously good looking tsundere, the freckled girl, the older woman at the desk that still is hot and so on - I really think every taste is covered, unless you are into black woman. Didn't see one. And mostly talking about looks here, not necessarily the personalities. They can be surprising. But they are all well written.
Story is good (a bit worn out but well told). No one acts unbelievable. English and dialogues are spot on.
The dynamic with his siblings and mom is very lovely (no incest and I doubt there ever will be because it simply wouldn't fit) and thus believable. These guys/gals really care about one another.
Music is fitting and not that stuff you hear in nearly every VN that doesn't use something original.
Length is pretty impressive for a first release too.
MC is no push-over (unless you chose too I guess, didn't try that). Choices are there, but not THAT many - enough though for my taste. Don't know the level of impact they have.
So, as I said, very good start. Would rate 0.1 5/5. If the dev @A&K Studio can keep this level if will become one of my favorites and maybe I'll even back them later on.