After the sports festival ended with a kiss, the next hurdle in the battle to save Kakeru is Christmas Eve and New Year’s. Specifically, Naho wants to avoid a fight she believes may have led to Kakeru closing his heart and taking his own life not long afterwards. Suwa later comforted her that night, and also confessed to her, leading to the future where they married and had a kid.
It makes sense for Naho to want to avoid getting in a fight with Kakeru on New Year’s, but this time her letter was a lot more vague about what exactly she could do.
After a relay race win that was a team effort for her and her friends, she’s on her own again, and Suwa is more concerned with keeping himself out of the equation all together: no shrine visit, no comforting, no confession.
Hagita wonders if changing the future to such an extent is really okay and right…but Suwa sees it another, more quantum way: the minute they got their letters from the future, they were no longer in the world that led to that future. They’ve on off on a tangeant that will result in a new future, while that old future will continue on unaffected.
Temporal technobabble aside, nothing Suwa does or doesn’t do matters in the end. In the end, Kakeru wants to go home to his grandma, and Naho asks if he’d stay a little longer, assuring him his grandma will be just fine. That confident assertion sets Kakeru off. He rejects Naho’s notion one can simply decide things will be okay, because he thought that way about his mom before she took her life.
He still blames himself for her death, which means Naho is only able to do so much; she’s no therapist, and it’s possible no words she could have come up with, up to and including a prompt apology for angering him, would have done any good. Suwa comforts her again, but skips the confession, instead urging her to go after Kakeru.
But when she calls Kakeru, he smashes his phone, clearly fed up with talking. Naho, Suwa & Co.’s best just wasn’t enough to avoid history from repeating itself. Here’s hoping there’s still a way to salvage this mess.