I did like Mai bringing up what Sakuta wants to do. You can clearly tell she wants him to go to the same university as her. Also, her remark about no cheating is funny, but might provide an insight that Mai doesn't take lightly in cheaters. Perhaps a warning of sorts for when they start dating. Though from what we have seen out of Sakuta, I doubt that is something she would need to worry about.
Even with their final date and breakup, the loop continues for Sakuta and Tomoe. We even get a clear lie from Tomoe saying she is unaware of the loop. I did love how the theoretical question to Kunimi applies to both him and Sakuta. As Kinimi has a girlfriend, but it is clear Rio has feelings for him. For Sakuta he clearly has feelings for Mai, but at this point Tomoe has feelings for him. Still, Tomoe is just hoping there is a chance that Sakuta would have feelings for him. Though this was never going to happen for him as he has only feelings for Mai. As Sakuta has shown that the feelings of other people don't have a direct effect on him. He likes Tomoe as a friend, but her feelings for him won't affect that. He had to tell her straight.
The big thing for Tomoe she needed to stop holding her feelings. Even if she said they would break up and just be friends, there is a slight hesitation on her part. What if his feelings would change? Obviously, as stated for Sakuta that would never change. She needed to let that feelings out even if it means getting rejected. Now that things here are resolved, Sakuta & Mai are dating. Tomoe rejects Maesawa which shows a development in her. After all, her from before wouldn't want anyone to dislike her. Rejecting Maesawa's feelings what would lead to a potential of him hating her, but he seems to be taking it before compared to when he saw the misunderstanding 2 episodes ago.
It is quite interesting that it was all a future simulation with Tomoe as the source of Laplace's Demon. Still the question of why was Sakuta a part of it. Rio's suggestions seem fitting. Couldn't anyone else be a part of it? I wonder if it is possible that Tomoe had feelings for Sakuta for a while and even before they first met. That would make why he was able to be a part of the future simulations more than they shared the butt encounter. Plus her giving up on that love was the result why everything went back to normal. There is no evidence in the arc to show this, but it would make mores sense to me at least.
In quite the ironic moment, after Sakuta starts to date Mai, he finds Shoko.