As Honoka/Aiko’s “Ghost” “erases” another classmate (perhaps involved in the bullying that caused Aiko’s suicide) in front of Elena, Shuuichi and Claire ask Sayaka’s gang to give them all the coins they collected so they can go back to living normal lives while the two of them “end the game” for good. It’s a neat strategy, but unfortunately we never get to see it realized in this frustratingly incomplete finale.
Claire finally gives Shuuichi an ultimatum: either they hang out at one of their houses or they’re through, having had only this one summer together before going their separate ways. It’s a bit out of left field, but the result is Shuuichi invites her to his house, which is filthy and no place for a makeout session. When Claire tries to get answers, a repressed memory of Elena in the same position surfaces, and in a panic, Shuuichi nearly assaults Claire before returning to his senses.
Ultimately, Sayaka’s gang decides they’ll give their coins to Elena and not Shuuichi. Chihiro makes the exchange, but is interrupted by the arrival of Shuuichi, whose memories continue to surface. He now knows that Elena used her ability to erase his memories so Honoka/Ghost Aiko wouldn’t go after him. In effect, she did the same thing to him that he and Claire want to do for Sayaka’s crew: shoulder all the burden.
Shuuichi wants more answers, but Elena is elusive, and a fight ensues, that while technically impressive and exciting, doesn’t really amount to much. With his memories returning Honoka/Ghost Aiko appears and prepares to erase Shuuichi altogether. While he’s busy with “ghost clones” Elena slips behind him and uses her ability, locking the memories of her back away and saving his and Claire’s lives.
And that’s pretty much where we leave things: a stalemate with no time left; an ellipsis. Kaito and Ghost Aiko guard the landing site that Shuuichi and Claire are still determined to reach, reuniting with Sanbe for that purpose (Hey Sanbe). Sayaka and the others go back to their lives.
Mifune, perhaps the most ineffectual character of the entire series, is resigned to moving on from Shuuichi, who was never aware of her feelings. But the power couple is still in the game, and still determined to end it. It’s just unsatisfying that we probably won’t see that end in anime form. Thirteen episodes should’ve been enough to tell this story.