Sakurai did not leave immediately, because she did not know where to go.
Should she visit her teacher, who would continue urging her implicitly to devote herself to Kirihara? Or should she return to her apartment where there was nobody else at home? Sakurai was an orphan. She had no family.
Oda once said that her parents died in a car accident, but the record of which was nowhere to be found despite Sakurai's efforts. Never mind. It would not matter anymore.
Her character was one of indifference, with no particular love, no special person, nor anything on her bucket list.
Her action was dictated by whatever her teacher felt she should.
That day, she did it with conflicting feelings. Unexpectedly, though, it was interrupted by Bunndai. Good for her, as she had not made up her mind whether it was right.
Oda seemed to have forgotten that people were able to think on their own.
Now, Sakurai was lost. Where was she? Where should she go next?