The Place We Longed to Reach - S1.E12

Hinako is too cold to fall asleep, so she heads downstairs for a warm drink and notices a tasty smell coming from the coffee shop. Curiously, she peeks into the dark kitchen... and sees Mayuki stirring something in a large pot, chanting Chiaki's name like some sort of spell. Hinako timidly speaks up, and Mayuki's reaction makes it appear that she's hiding something. Unable to bring herself to question this strange behavior further, Hinako tells Kuina about what she saw.