Gawd damn, I have to summarize you fews days of the discussion, you guys have been carrying on in this thread (Annoying as fuck, I must say.)
If I remember correctly, there was a domino that started to fall. The stress from the sounds of falling tiles became unbearable and MC ran away wherever his eyes looked. In other words, we don't know the exact reasons, they are not named explicitly, but there are various hints here and there, for example, Katie believes that their kiss was the root cause of everything and the further consequences of this act led to the MC's escape. I don't really believe in this, I think this is just Katie raising her self-esteem.
For now, I simply explain this myself as an unknown part of the plot that will be revealed later. As a result of which the stress for MC became so severe that he had to run away, leaving even Leia behind.
I can sit here and come up with different theories about why Sasha is Summer or that Leia caught MC who was going to take Katie's virginity, and according to the Wollust mafia rules, this is about the same as disgracing the royal daughter. In the novels of Maurice Druon, for example, after this the daughter goes to a monastery, and her lover goes to the Place de Grève to be quartered.
BobTheDuck probably can answer better, as I saw he posted on this topic.
The setting of the story: Something happened that made the protagonist run away, leaving behind the people he cared about. He reconsidered his actions after a week, but when he was about to return he was framed and sent to prison. In prison, Helen visited him and told him something that made him stay away from the Zanes and Wollust and not seeking for opportunity to reconcile. Which he did until Leia called and said that Helen had been attacked and that he was needed at home.
I think the details will be given later, but for now this is enough for me to start playing and get to know the characters and their dynamics. The whole game starts from the moment when the MC decides to return for a while to help people he cares about.
Then I just watch and enjoy the scenes, learning about the characters and their personalities. Flirt with girls. Grope their butts. Hang out in bars. Remember the past. And try to figure out why Leia called, and what is really going on here. Nothing surprising for me actually, Ocean has never been known for straightforward plots, and information in his stories is always given in small fragments as the plot develops.
At least the Mafia Jury looks better than a sudden setup with rape and a subsequent trial that does not follow from the previous actions and plot. All the questions you addressed to me I will ping pong you back with advice to let Ocean answer on them.
At least, that's what I'm going to do. I won't theorize or speculate, I'll just keep an eye on how things unfold in the next updates. It's Ocean's job to eventually tell me what this all is about.