It was okay for the initial release. The cg are kinda generic, but still good and likeable.
The text in the dialogues needs to be corrected, there are often mistakes in addresses (mother, where sister should be, names with a lowercase letter, etc.). This is mostly because you introduced a whole bunch of female characters at once, rather than gradually.
cons:
1. Dialogues are weak. For example:
Shy people usually don't say that they are shy. They either remain silent or literally/figuratively avoid the conversation.
Here he himself in every second dialogue for some reason tries to say that he is shy. Also, other people rarely say about shy people that they are shy. They are usually more harsh in their expressions and call them idiots or weird.
2.
Problems with plot:
Why would he be shy at all, he has a complete family, he is a millionaire and he is not a virgin, judging by his backstory with his ex-girlfriend. Or is he embarrassed about something specific (the desire for incest, for example?)
3. It is unclear why so much attention is paid to some trip, it should be an ordinary event for the son of a millionaire.
4. There are scenes where other guys fuck your potential LI. Now you need to either develop this theme further (add NTR, sharing or whatever) or delete these scenes to hell, because they look dubious, unnecessary for the plot and at the same time unavoidable.
5. "They arr rook same". Many of the female characters are quite similar, when I'm away from the screen they are completely identical in my eyes. There needs to be more variety in hairstyles, hair color, clothing style and makeup.