Shin realizes he's forgotten his winter break homework in the classroom, so he decides to take Kujima with him to retrieve it. To avoid suspicion, Shin has Kujima wear a horse mask and suit as a disguise, and they successfully accomplish their goal. However, on their way back, the teacher happens to run into Kujima...!?

When Shin woke up, snow had fallen and the surroundings were covered in a blanket of white. Seeing Kujima's excitement, Shin taught him about Japanese snow games. At the same time, it was revealed that Ei had failed all of his private university entrance exams. Disturbance spread through the family, and Shin regretted how he had been nagging Kujima. Shin went to apologize to Ei, but…