School exams are coming. Misha disrupts Kotarou to study for her exam, which is about happiness. Failing to succeed, Misha gives Kotarou a special pencil, believing that good grades make Kotarou happy. However, Kotarou gets scolded and has to retake the test. Shia presents Kotarou meat buns and encourages him to talk to Misha, who is studying on the roof. Kotarou and Misha help each other out. Takashi still places above Hiroshi in the results. Kotarou improves his placement.