300px|thumb|Kai-awase shells, Edo period Kai-awase (貝合わせ "shell-matching") is a Japanese game with shells, typically the shells of the hamaguri clam.
300px|thumb|Kai-awase shells, Edo period Kai-awase (貝合わせ "shell-matching") is a Japanese game with shells, typically the shells of the hamaguri clam.
The shells in the inside would have elaborate paintings, often depicting scenes from the Tale of Genji. The aim of the game was to find the other half that would fit.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).