She never performed it. She died with her notes locked in a safe-deposit box, along with a single vial of water from Yaezujima's lake and a fragment of the crimson robe.

The most famous passage involves Kageyama confronting a well at the island's center. Looking into the water, she does not see her reflection. Instead, she sees the back of her own head—as if she is looking at herself from behind. The Taima speak through her own throat, and she learns that Yaezujima is a "narrative trap": everyone who ever writes about the island becomes part of its eternal story, doomed to repeat the encounter for future readers.

What they found instead, at the lake's eastern shore, was a wet crimson robe, identical to the one described by Takeda Chōbei in 1721. Kageyama noted in her journal: "The fabric is raw silk, hand-woven, probably Momoyama period (c. 1600). The smell: dried lotus and rust. Yuki would never have worn this. Would she?"

Unlike a simple romance, Kageyama’s En treats connection as a weight. Characters are often drawn to Yaezujima not by choice, but by "pulls" from past lives or ancestral debts.