I feel like.. if she could say no and leave from the producer Toppy situation, this should have also been like that. She should've hesitated if she still had feelings for Shinobu, which she had in some capacity, indicated by the reminiscence panels right before Yuma started.
Also, you could just say that her mental was very hurt at that point.. and Yuma being all forceful, during such a vulnerable time was what caused her to allow it..
But it still doesn't sit right with me. If you go to someone after a situation like that, sleeping with them is not the first thing you should think of, especially when you haven't even confronted your partner to confirm that they actually willingly cheated on you.. idk man..
Sure Sakura is submissive as hell.. but she could have been so much better as a character if she had some sort of hesitation..
It just felt like.. Yuma suggested it, and she was just on board..
Sakura was in a heavily emotional state. She sent him a message but it was with no intention of meeting him. He just "coincidentally" happened to be at the very stop Sakura got off the train at.
He offered to take her home but she didn't want that. So he took her to her place. We don't see her pouncing on fuckboi. We don't see her leaning against him. We don't see her relying on him. She's venting yes and hugging herself. He leaves.
When he comes back he sees her crying about Shinobu. Then HE decides to act. Flooding her with compliments and then kissing her. She's surprised and for brief moments we see her telling him "no" and "wait". That's not someone that simply agrees to it. Him using force was why he was so aggressive. He didn't stop. He kept touching her. He kept pleasuring her.
We've seen what happens to Sakura when this happens. Her mind gets cloudy. Foggy. The pleasure begins to take over. Yuma makes her cum and that's when she becomes too weak to resist. So he continues from there. He doesn't give Sakura any breaks. He doesn't take his sweet time. He just gets right to it.
There was a brief moment of her coming back when she saw the phone ringing and spoke "Shinobu.." but again Yuma just didn't stop. He never suggested sex. He forced it into Sakura and she gave in once she came.
And her choosing not to see him very well could be out of guilt. If you did something you shouldn't have against someone. Would you want to see them immediately?
Sakura was wrong for the whole thing but I wouldn't say she agreed. She just gave in.