"Sorry for springing that on you."
This never disappoints when it comes to proper communication and being considerate to one another. That's not even adding to the fact that Rintarou won't forgive a half-assed, interrupted confession and calls her to ask for a chance to shoot his shot properly.
"I want to go to the summer festival. Just us two."
My girl has it in her too! Love that she's not losing to Rintarou when it comes to having the courage to say and do things that must be done.
Got a good feeling about this. She wouldn't ask him to go to a festival (date) with just the two of them just so she can reject him. And she's all dressed up for it too! Best of luck to these two, hopefully no more interruptions (she took care of that by explicitly stating it was only for the two of them).