Class 3-4 II.Ai begins her investigation of Class 3-4. Alice confirms he occasionally brings clues that he found in the outside world, but Dee secretly keeps destroying them. When it is time for Ai's thirteenth birthday, Julie, Scar, and the students of Class 3-4 throw a party for her. Alice's gift to Ai is her repaired gravekeeper's shovel. He reminds her that she mustn't forget her duties as a gravekeeper, and remarks that people's wishes shouldn't always be granted, as it won't help them move forward. Alice mentions that Dee has changed as if she is hiding something, and she believes Class 3-4 is a better place than the outside world. As the months go by and Ai continues her investigation, she volunteers with Alice for the school's cultural festival which causes a slight time paradox. In the library, Ai is trying to find clues that Alice has left behind, but Dee usually finds them first and destroys them. Luckily, Ai manages to find a clue that Dee failed to notice. Reading an article concerning about a student from Class 3-4 who had died, but Dee catches her before she sees the name. Dee reveals that she died on July 28th and that Class 3-4 wished to reset time to prevent her death after she fell out a window, thus creating the temporal loop. Dee fears if that world were to disappear she will as well, explaining why she prevents anyone from resolving the temporal loop. Ai realizes that Dee is in love with Alice, and Dee asks her not to tell him. Dee feels that she is the only one who can truly understand Alice; however, when she witnesses Alice and Ai playing basketball together, she begins to feel envious and dejected.