The girls are attracted to him because it's an AVN game and the Dev made it so. I don't even think you can push/avoid anyone, which sucks, for me.
I can't really tell if you are serious or joking. Any girl in any AVN game is attracted to the MC of that game because the dev of that game made it that way. It would be interesting to see an AVN without a script where the characters act on their own and decide for themselves what to do. Hey lazy devs, it's time to give these girls AI and set them free!
At least in Ocean's story, the author had the decency to clearly show the reasons for the female characters' interest in MC. I didn't notice the girls trying to get into the MC's pants out of the blue. Well, it may seem that this is going that way between the MC and Nami, but they had a common past, she was in love with him long ago and this is part of the story. If the MC is strict enough with her, nothing happens.
Another character who is initially attracted to the MC is Vic. And here also I do not see anything far-fetched. Sometimes you like a stranger, and you can even synchronize your steps for a while, walking in the same direction to watch her from afar (or him in Vic's case). The traumatic event they experienced later created a connection between them (or made them feel like they had one). And this, in turn, became the reason for the involvement of the MC in the fate of Vic. But I think that there is something more, perhaps some events in the past due to which they are connected and we will find out about this in the future. Vic is clearly a very important character to the plot, and even if the MC doesn't see her as LI, she will always be around somewhere. This girl is too clingy
But the rest are just friendly or curious about the MC, they are not attracted to him from the very beginning, and the MC's actions are what attracts them to him or repels them from him. Yep, for the sake of the project, you are forced to stick with Bella for a while, but no one is forcing you to break into Holgerson's house with her. You don't have to tell her that you're not so different if you don't feel that way. No one is forcing you to wave your wormy in front of her face in the changing room. These are all player decisions.
Moreover, the interest of some girls causes rumors and fuels the interest of other girls. Sasha and Robin will invite you to train with them if you are with Bella. At first, Zara gets angry at the MC because of the basketball, and later she is curious about the MC because of Noji and Nick. Mila admits that it was the MC's asexual behavior that piqued her curiosity. The MC should look at the girl's cleavage more oftern
So, none of the girls are initially attracted to the MC, except for Nami and Vic. But later, when the relationship is built enough, it's up to the MC if he wants to go further with a certain girl or not. The game gives that choice with every LI.