One morning Yuki joins Chio and Manana…in her very tight and revealing new track outfit. She has no problem walking with them to school like this, and Chio quickly comes around…but Manana can’t handle it; it’s just too sexy.
To further test whether Yuki is naive or just an exhibitionist, Manana takes her to a busy konbini, where every guy proceeds to stare at her in a not-at-all stealthy way.
Manana can’t believe Yuki doesn’t notice…and she’s right not to, because Yuki does notice; she just doesn’t mind. After all, she’s used to big crowds at track meets.
When Chio changes into her soft tennis outfit, Manana deduces the reason why: Chio’s visor enables her to keep her face hidden, while the tennis skirt simultaneously serves as a semi-disguise while making Yuki appear less of an exhibitionist, since it’s two students in their club getup rather than one.
Even so, Manana intends to foil Chio’s plan not to stand out, pointing out to Yuki that they’re exactly 1500m from school (her favorite distance) and there’s a nice tailwind. Once she pops a popper from the konbini, Yuki is off and running, and Chio is exposed as the only remaining girl in an eye-catching outfit.
Chio later gets a measure of revenge by recalling the time Manana greeted her in her school swimsuit years ago, a moment Manana would rather everyone forgot.
Another morning, Manana has her head buried in her phone looking at ways to lose weight, while Chio discovers a kind of video game world in the small space betweeen two buildings she can easily scale due to her latent athleticism.
She ends up almost getting discovered by two office workers, while Manana meets the salaryman who ran with Yuki—and is impressed by how much weight he’s lost and asks for some pointers.
Manana is so engrossed she forgets all about Chio…until the man leaves and she spots her just a few vertical feet from the roof. Manana takes the easy way up there (pretending to be the daughter of another worker delivering her dad’s lunch).
Once there, Manana runs and jumps across the gap to scold Chio, but Chio bursts into tears, worried that Manana might’ve fallen down the deceptively high height in the gap between the buildings.
Indeed, when Manana realizes how high up they are, she faints into Chio’s arms. But Chio is just glad she has a friend who would risk her own safety to make sure she was okay.
In the shorter final segment, we learn the story of how Shinozuka Momo joined the Disciplinary Committee: she was always trying to share her abundant knowledge with her classmates and trying to improve their studying methods, but everyone derided her as an annoying Goody-Two-Shoes.
In her moment of greatest frustration, she’s stopped by the student counselor at the school gate…but not because she did anything wrong. He sensed she had something she needed so say, and needed someone to listen. He gives her the idea to join the committee so her words would carry more weight and more easily reach her peers. The rest is history.
We also learn why she has a thing for the counselor: when everyone else simply wanted her to shut up and go away, he told her that they actually needed her. Not someone like her, but Shinozuka Momo herself.