It happened in the past… Iroha would go to the hospital daily and play with Ui, Touka and Nemu. The girls loved Iroha and looked forward to her visits. One day, the three girls create an Uwasa similar to an urban legend while playing. That way, if they died, the Uwasa they created would live on and remind Iroha of them. Iroha also created the “Uwasa of Eternal Sakura”, with the wish that the three girls will be discharged from the hospital without illness. And one day... Kyubey appears before Iroha.

The Magical Girls rush to Iroha while fighting against Uwasa of the Soldier Bear. The Amane sisters also stand in their way, but Mifuyu keeps them in check. "The plans of the Magius have failed." Meanwhile, Iroha and Touka regain the memories that Nemu's power took from them. Touka is happy to be reunited with Iroha but can’t recall why they became enemies in the first place. Nemu tells Touka why she had been hiding the truth until now. Now, they see the promise they made with Ui in a new light.

Iroha grieves about the battles that have been fought so far and figures she couldn’t save anyone in the end. Kyubey thanks Iroha and says that her hope caused everyone to fall into despair. The despair of Magical Girls is what Kyubey has been seeking all along. All the while, Iroha’s Doppel continues tormenting her. As a result of Iroha’s interference with the Magius, more Witches will be born. On the brink of despair, Iroha hears a familiar voice call out to her.