As she had warned, Kaori’s memories of Yuuki have reset, leaving him at square one. But it isn’t as hard as I thought it would be to reonnect with her. The main reason for this is that she doesn’t remember eating lunch all last week, which means she was eating with a friend she had made. So ironically, the very phenomenon preventing her from remembering friends helped her remember Yuuki, lending credence to his story.
Everything Yuuki and Kaori do in this second week is very similar to what the did the previous week: they chat with each other and have fun doing things, learning about each other in the process. With Kaori’s memory sure to reset next week, wiping it all out, Yuuki figures out a way to help her, while keeping score at a volleyball game: all she needs to do is keep a diary. She hints that she might have done this before, but is enthusiastic nonetheless, and starts jotting down as much as she can.
It’s notable that Yuuki gets even closer to Kaori this week, taking her out on a date, meaning his jogging of her memory made this week more productive, friendship-wise, than the first go-around. This all seems neat and tidy untill the third week begins. Kaori reads the diary and tries to pretend as if she remembers it—that Yuuki’s plan worked—but it didn’t, as her tears betray. Yuuki blames himself for selfishly forcing matters with his enthusiasm.
But when he apologizes, Kaori decides to write that down as well, providing more information on Yuuki for her future self; specifically that he’s in her words, and kind and wonderful person. But all of this raises the question of whether she kept a diary before, and if so, why she stopped. I can probably surmise that the more she writes, the longer it takes to read and process it all, until there isn’t adequate time to do so before her memory resets again.