[Machine Translation] Aya's confident final exam grades plummeted. Uesugi, who had the same experience, consoled her. Meanwhile, Sunahara returns to Aya's junior high school, and the class is in an uproar! What is the purpose of Sunahara's return? Wakatake gets information about a mansion inhabited by ghosts, and sneaks in there with KZ to find out the truth. What awaited them there was an unexpected big case. Can Aya and her friends solve it and celebrate Tanabata with KZ? From upper elementary school. Total ruby.