On the one hand, I wouldn’t have minded a study group episode with just Kaori and Yuuki being awkward, but because she invited Saki and Shogo too, it was much more productive. It also showed that everyone makes friends and treats friendships differently. Shogo may seem cold and scary at first, but the fact he’s hanging out is proof that they’re already friends, without any forced small talk being needed.
The sight of Kaori with a group of friends also delights her mother, and formally meeting Hase, the friend Kaori is always talking about, compels her to arrange a later meeting with him alone. Yuuki is nervous at first, but Shogo lays out the possibilities: she either wants to talk about Kaori’s memory, or tell him to stay away.
We never thought the latter was going to be a possibility, but Kaori’s mom does express surprise Hase is still her friend after so long. If Shogo puts little work into making and having friends, Kaori’s “situation” demands that her potential friends work extremely hard for her friendship. We learn from her mom that while the car accident gave her a concussion, there was no brain damage that would have caused such specific memory loss.
Yuuki may be bad at math (like me!) but he’s no fool: he knew this was a possibility. But the fact that he now knows her issue with remembering friends is at least partially psychological doesn’t change anything. If what he’s gone through is what it takes to be her friend; if he has to re-introduce himself to her again and again and again, so be it.
By agreeing to those terms without complaint or wavering, he stands to gain more and more of Kaori’s trust. And as she starts to remember how happy having friends was and is, who knows; her “friendnesia” may start to recede, or disappear entirely. Until then, Yuuki will continue to be her friend on whatever terms she deems necessary. He’s a loyal dude.