|Class 3-4 III|
|Season 1, Episode 12|
| ||三年四組 III|
| ||San-nen Yon-kumi III|
| ||September 21, 2013|
| ||Owaranai Melody wo Utaidashimashita|
|Class 3-4 II||N/A|
|Image Gallery||List of Episodes|
|[v · t · e]|
Class 3-4 III (三年四組 III San-nen Yon-kumi III?) is the twelfth and final episode of the Summer 2013 anime known as Sunday Without God (神さまのいない日曜日 Kami-sama no Inai Nichiyōbi?). It was aired on September 21, 2013.
Ai and Alice play basketball together, and when Dee overhears Alice's conviction to sacrifice anything he must to free Class 3-4, she decides she will create her own world by first destroying the old. In the morning, Ai hears from Dee that she is going to tell Alice the cause of everything, and asks her to go with her afterwards. At the basketball court, Ai meets up with Alice and wonders what will happen next. Dee then arrives in the classroom when she kills a male student, and the rest of the students are shocked when they see him revive. Ai and Alice then notice that Dee is forcing all the students of Class 3-4 to remember the incident of that day, and the world begins to reset itself drastically. They run for the classroom while Dee attempts to repeat that same day by jumping out of the window again as means to reset the world and herself. Meanwhile, Julie and Scar witness a fog-wave that threatens to swallow Ostia. Dee begins to fall, but just then an epiphany suddenly strikes her - it was actually Alice who died that day. Alice grabs her, then Ai and all of Class 3-4 pull them to safety in time. As the fog-wave retreats, Alice realizes the truth and remembers how he died while saving Dee from falling. He convinces Dee and the other students of Class 3-4 to depart for the outside world and experience real life, thanking them for caring about him so much. While the world is vanishing deliberately at last, Alice reveals he was buried by a gravekeeper in the outside world, and he implores a crying Ai to go as God's observer.
In the epilogue, Julie, Scar, Celica, Dee, and all the citizens have evacuated to the outside world. Ai is seen in front of Alice's grave, and he appears next to her, asking why she had to save him (by having wished for his continued existence in the outside world), and she smiles.