After a normal day of school, Sensei decided to head to the school's pool and spend time with the members of the Swimming Club in place of his regular counseling duties. Upon arriving, though, he found his attention captured by Ayane and decided to focus solely on her to showcase his mutual enthusiasm for her renewed lease on life.
Wrapping up another one of her trademark half-finished stories, Ayane asks for Sensei's help with deciding her Halloween costume this year. He's unsure of what to suggest, quipping about the level of freedom he has considering how little people cared about Chika's costume last year. After a bit of thinking, he decides not to suggest anything, only asking that she not copy Maya's first Halloween costume. Ayane's subsequent pouting and attempts at swaying his opinion fail, and the conversation drifts on. A slip of the tongue leads to Sensei updating Ayane's list from last Halloween, with him filling her in on his date with Niki, and his day trip with Nodoka. She asks him not to get into details, not wanting to ruin her currently good mood, and the topic changes.
Sensei asks Ayane if this year's Halloween party will be a return to the Amamiya Estate. She's unable to confirm this as of yet, adding that, in addition to the main party with the class, she'd like for him, Ami, Maya, and Sana to have their celebration this year. Sensei's fine with the idea, only warning that she'll need to come up with a way to break him free of the rest of the class's grip. Following a reminder that her new outlook on life isn't going to be disappearing anytime soon, Ayane asks Sensei if he's noticed any changes in Maya's personality as of late, citing their strange conversation during the Beach Wars. Sensei agrees her example is concerning but is unsure of why Maya would be changing, theorizing that her true personality is starting to slip out now that she's comfortable. Ayane agrees with this possibility, though continues to question the timing.
Using this as a segue, she also asks Sensei if she knows what's wrong with Miku. Sensei ambiguously confirms that he might know, asking for clarification on what she means. Ayane points behind him, and the two stare at an uncharacteristically quiet Miku. She stares off wordlessly in the distance, scaring Ayane and causing Sensei to seek out someone else for help.
He walks over to Karin and asks her to check on Miku.