Iroha is worried she’s already put out her fellow magical girls, but Mitama, Momoko, Kaede and Rena are happy to continue helping in her search for Ui. Turns out the aloof Yachiyo is the exception and not the rule in Kamihama magical girls. Iroha is sent to the restaurant owned by the family of Yui Tsuruno, who is also a magical girl eager to help, but she does know someone who could.
Demonstrating that the network of Kamihama magical girls is a small world, Tsuruno introduces Iroha to…Yachiyo, who has a lead on a new rumor: the Seance Shrine. The three team up to search the nearby Mizuna Shrine, which has a legend of tragic love in which a woman sacrificed an entire town to be reunited with her lover.
However, their stamp-collecting circuit turns up no further clues. Yachiyo still uses the time to impress upon Iroha the importance of becoming stronger, for the times when more powerful magical girls aren’t around to bail her out. She also asks Iroha and Tsuruno to help her out with a limited-time sale at the supermarket.
In the middle of their shopping trip, a Witch’s Labyrinth appears, and the three are locked in a battle. Iroha is overeager and very nearly gets herself killed, but she’s saved by Yachiyo (she may not like Iroha much but she’s not one to let a fellow magical girl die needlessly).
Tsuruno ends up defeating the Witch with authority, demonstrating why she has a strong claim to the title of “mightiest magical girl.” When the Labyrinth is dissipated, Iroha finds that her Soul Gem is starting to become corrupted. Yikes!
On a hunch, Yachiyo decides to give Mizuna Shrine another chance, this time at night, and sure enough, it and Seance Shrine are one and the same. She and Iroha write the names of lost people they wish to see and then pray; Tsuruno is harassed by a Witch for not writing down a name so she can stand guard.
Then Yachiyo and Iroha are transported to a dreamworld full of bridges where they each encounter the one whose name they wrote down. In Yachiyo’s case, a girl named Mifuyu whom both she and Tsuruno knew (perhaps the three were once a team together). In Iroha’s case, Ui. But even if it’s the real Ui, there’s sure to be a not inconsiderable cost to seeing her.