He tries to see her again, but is rebuffed by one of her friends.
He accidentally rescues a classmate, Tomohiro Nagatsuka, who becomes his friend. This is the first friendly contact he's had in years.
But why are the friends? What right does he have to a friend?
Nagatsuka responds: there's no qualification; friendship is beyond words.
He tries to see Shoko again. Nagatsuka runs interference for him.
They talk about friendship and what it means. Shoko tries to show him something in the notebook, but it gets dropped in the river.