Yume-chan is consulted by Yuri-senpai that Sugiyama-senpai's behavior is strange. She said that she could no longer chat with her or go to school with her like she used to. Yume-chan, who has always looked at Yuri-senpai and Sugiyama-senpai, who are good friends, with her longing eyes, wishes that they would return to the way they were, and enters Sugiyama-senpai's dream, wondering why they have changed. I will make a decision to check the truth. Then, Myu-chan and the others go into Sugiyama-senpai's dream. However, the world I saw there...