Osanai-san nods.

“You’re right, there’s only one way.”

As if praising me who sought advice, Osanai-san doesn’t continue. If that’s the case, I can say it.

“When the cooking class started, there was already dough made with Sawami-san’s recipe in the refrigerator.”

Where did that dough come from? Of course, from Sawami-san’s house. Sawami-san had her own dough when she went to school. Perhaps she asked someone in her family who is good at making scones.

Like submitting a project completed by parents as vacation homework, maybe Sawami-san brought the perfect dough for herself. The dough isn’t that big when rolled up. It can be easily carried if wrapped in plastic wrap. As I thought about this, I suddenly felt lost.

“But it’s fine that she brought the dough, but how did she put it in the refrigerator?”

There’s a lock on the kitchen. It’s difficult to enter without a valid reason. I think the idea isn’t bad, but if there’s no concrete way to execute it, it’s just a theoretical discussion.

Osanai-san doesn’t take my question as a problem.

“Sawami-san is in charge of home economics. Her role is to prepare supplies, and there must have been a way to borrow the key.”

I want to say so, but I can’t nod.

“But in Osanai-san’s class, the 2nd period was P.E. She didn’t need time to change clothes since she practiced in her gym clothes, but she had to return from the gym to the classroom, retrieve the dough, go to the staff room to borrow the key, and get to the kitchen before anyone else to put the dough in the refrigerator. Isn’t that too little time?”

Osanai-san tilts her head while holding the teacup.

“Do you think Sawami-san moved the dough after the 1st period ended? Why?”

“Because if the dough was in the refrigerator when the 3rd period started……·”

As I was speaking, I realized the mistake in my thinking.

“Ah. It’s okay to do it quickly. It’s also fine before class starts.”

“Right. If she asked the home economics teacher before the morning self-study period if there was anything to prepare and was told to put the ingredients in the refrigerator, she could have put her own dough in at that time.”

That seemed like a bold guess, but thinking about it, I had also heard the clues that led to Osanai-san’s reasoning.

“The cooler box.”