|Release Date||November 25, 2017|
|← Mourning||Fierce Battle →|
Wakaba and Yuna are taking a break from running on the training grounds, discussing the Taisha's plans to reinforce the barrier. After the Vertex attack predicted in the oracle, they will perform a ritual that will make it impossible for Vertex to pass through the barrier. There is another countermeasure the Taisha has considered, but neither Wakaba nor Hinata knows the details of it. Yuna quickly changes the subject, saying that all they need to do is win the next battle, and peace will be attained.
Later, Wakaba is immersed in her thoughts about their appeal for the Taisha to remove the forced cancellation feature from the Hero System app, so that no one will ever have to suffer the same fate as Chikage. Hinata refocuses her attention, telling her that if she familiarizes herself with the nature of fairies, it will be easier for her to use more powerful Trump Cards. Wakaba says that she is tired from training with Yuna, but suggests that an ear cleaning might motivate her to study. Not long into the ear cleaning, Yuna enters the room, temporarily making things awkward.
Yuna suggests that since summer break is here, the three of them should go somewhere together, and Wakaba and Hinata agree. The next day, when Wakaba and Yuna meet Hinata at Marugame Castle's front gate, both of them are wearing ridiculous disguises. After Hinata orders them to go change, the three of them spend the day strolling around the city. They discuss the upcoming Marugame Basara Festival, and Hinata suggests that they all buy yukata and have a photoshoot. However, Wakaba and Yuna are able to talk her out of it.
Once the three of them reach a certain point in their journey, Yuna reveals that she has been deeply affected by the deaths of Chikage, Anzu, and Tamako, and regrets not allowing them to know more about herself. When she asked Wakaba and Hinata to spend time with her, it was because she wanted to tell them about her own life. After they listen to Yuna discuss her childhood in Nara Prefecture, the three of them make plans to go to the festival after the Vertex battle.
The moment of the battle finally arrives, and six evolved Vertex enter the barrier. Yuna and Wakaba agree to battle three of them each, with Yuna using Shuten-Doji and Wakaba using Daitengu.