Kojima recalled an idea he attributed to Ryu Murakami: that every story presents a protagonist who falls into a hole and either crawls out or dies inside. He found it applicable to nearly all tales, but saw in The Woman in the Dunes a third possibility that revealed Abe’s genius: the protagonist finds a life inside the hole.
Kojima placed Kobo Abe among the authors who influenced him most and ranked The Woman in the Dunes among his top three Abe novels alongside The Face of Another and The Box Man. He was drawn to how Abe revealed contemporary society and human nature through science fiction, fable, and metaphor; Kojima associated narrative holes with awe, fear of the unknown, and even a basic arousal.
From The Woman in the Dunes, Kojima held that in life there are pits imposed on us and others we build ourselves, and that leaving one may simply lead to another. He proposed seeking a purpose within the current pit: there is freedom to leave, to stay, and to choose to live there, so the definition of freedom changes with one's thinking and point of view.
Kojima began by identifying with the climber Joji Habu, who selects dangerous, untried routes and turns into reality what no one else has done. However, the cameraman Makoto Fukamachi’s monologue shook him: Kojima recognized that his older self was no longer the pioneering leader but the one who follows behind, returns alive, and goes back to the mountain again and again because it is all he can do.
Kojima contrasted The Drifting Classroom with survival stories that end with a return home. His children begin wanting to go back, but accept that they cannot and see themselves as seeds scattered into the future; after Tohoku, Kojima viewed that drifting away from the previous era as a possible new way of living to preserve the future.
“But characters don't just move on their own. You have to find a part of yourself within them. Otherwise, you can't visualize them vividly.”