What a tangled web Y7 weaves…and yet it all holds together marvelously. As thanks for helping to change her fiery future, Sarushima lets Yamada borrow her powers for their festival booth. Sarushima then asks Yamada to help her erase her power, stating she wants to fall in love and never will if she knows the future of everyone she kisses. As a practical matter, Sarushima has outgrown her power, so it’s not a bad thing for her to want to free it up for another girl.
Unfortunately for Yamada, the “Witch Killer” whose services he seeks on Sarushima’s behalf is Tamaki Shinichi, a bit of an aloof trickster, who has already stolen the invisibility power of a witch, a power that will stay with him until he kisses another witch. Tamaki agrees to take Sarushima’s ability, but only if Yamada gives him valuable intel on whom Yamazaki will be choosing to succeed him as StuCo President.
Yamada first asks Yamazaki upfront for this sensitive information, which Yamazaki predictably declines to surrender, so Yamada decides to try Odagiri’s power—given to him with her blessing, as she wants to help Sarushima too—to charm him. Only his lips can’t get anywhere near Yamazaki’s, because of his secretary and bodyguard Asuka Mikoto stops him with a furious, panstu-revealing kick.
They tie Yamada up, expecting to need torture to get his true intentions out of him, but Yamada is happy to just tell them: Tamaki wants the info. Ironically, Tamaki was atop Yamazaki’s list of successors, but is bumped down when Yamazaki learns of his scheming. We also learn Asuka was the sixth witch, who willingly had her invisibility power taken by Tamaki…though that doesn’t explain her amazing strength!
With the candidates neck-and-neck-and-neck, Yamazaki proposes that the one who discovers the identity of the seventh witch will win the presidency.
There’s suddenly a lot of moving parts in Yamada’s plan to help Sarushima move on, but he never for a second considers backing out of helping her. In fact, he dutifully explains all these moving parts as the cause for the delay (everyone he needs wants something). Sarushima rewards him for his hard work with a kiss, forgetting that it means he’ll see her future.
It’s fun to wonder in the context of their kiss here, that if and when Sarushima does lose her power, whether she’d discover she was in love with Yamada after all.
Anyway, in that future, he sees that Sarushima has lost her powers (which is good), Tamaki has become president (which is fine), Shiraishi is Tamaki’s secretary.
That last bit is concerning to Yamada, especially the way she walks away with Tamaki and looks back at him in the vision. It spurs Yamada to decide to change the future he sees, by helping Miyamura find the seventh instead of Tamaki.
At the bonfire where he and Miyamura keep their distance from their reveling friends and classmates, Yamada admits to him what we’ve known for some time, but he hasn’t been able to verbalize until now: he loves Shiraishi, and doesn’t want to lose her.
Miyamura and Odagiri thus begin separately researching all the troublemakers in the school in their search for the seventh witch. Tamaki seems unmotivated to Odagiri, but by telling Miyamura this, and how it could be a two-horse race between them, Yamada figures out that Miyamura, Tsubaki, Itou and Shiraishi have been kissed by Tamaki, making him invisible to them, which he no doubt used to steal their research.
Rather than simply continue the race to find the seventh, Yamada, who is very much invested in Tamaki not winning, decides to use Shiraishi’s body-swapping ability to get back at him.
That plan will be set into motion with him switching bodies with Shiraishi, but in the light of his realization of his love for her, Yamada finds it more difficult than ever to actually kiss her, worrying about all the variables they never bothered worrying about before. Shiraishi isn’t having it and kisses him.
This upsets him, and when Shiraishi asks why, he tells her: in that future, she wore a look he never wanted to see again; a look of isolation and loneliness; the antithesis to her warm bright smile at the bonfire, surrounded by friends. But Shiraishi responds to his concerns with her own resolution: to never go back to being that lonely person, before asking Yamada to change the future for her.
Perhaps, once he has, Shiraishi may not have further use for her power, nor Yamada for his, and these two can move forward, along with Asuka and Sarushima, to lives defined not by supernatural abilities, but confidence, devotion and love.