Airi reveals to her friends that she has been living alone since she entered Yuijo and does not have much money to spend on living expenses. On the way back from the supermarket Shingo and the others stop by Airi's apartment and everyone helps to make dinner. Airi asks them to keep her living situation a secret so as to maintain the way students see her at school. The next day, Airi eats lunch Shingo and the other girls. Airi keeps her promise with Shingo and helps him study for the upcoming tests, as well as Sakuno, Angelina, Miu and Sana. Another day when they are over at Airi's apartment studying, Shingo and the girls celebrate Airi's birthday. While spending more time with the others, Airi begins opening up to them more. After the tests are finished, Airi begins addressing Shingo without the use of honorifics, and Shingo does the same for Airi in return.