A feminist SF short story set on a remote island in a far-future Japan where displaced people are forced to live. The narrative follows a controlled prostitute, a transgender man who is a member of the "new humanity" capable of parthenogenesis yet chose to remain on Earth, and a daughter who has gone far away.

A far-future Japan, an island where forcibly displaced people live. A controlled prostitute, a transgender man who is a member of the new humanity capable of parthenogenesis yet stayed on Earth, a daughter who has gone far away.

Haito Toori's 'Kokuu Ryoiki' (Void Domain) is a broadly-defined SF short story that reached the final round of the 17th Sogen SF Short Story Award (2026) and received the Jury Encouragement Award. The title at the time of submission was 'Mukyu no Hako' (Box of Infinity), later retitled upon award confirmation. The selection committee consisted of Hiroki Tobita, Satoshi Hase, and Haneko Takayama. The Jury Encouragement Award is given by the committee's recommendation separately from the main prize; this work has no plans for commercial publication.

Winner of the Jury Encouragement Award at the 17th Sogen SF Short Story Award, retitled from the submission title 'Mukyu no Hako.'