Orizuru

Since then, senbazuru and collective effort to complete it came to be recognized as synonyms of 'wish for recovering' or 'wish for peace'.

The term renzuru (連鶴, "conjoined cranes") refers to an origami technique whereby one folds multiple cranes from a single sheet of paper (usually square), employing a number of strategic cuts to form a mosaic of semi-detached smaller squares from the original large square paper.

Typical renzuru configurations include a circle of four or more cranes attached at the wing tips.

One of the simplest forms, made from a half-square (2×1 rectangle) cut halfway through from one of the long sides, results in two cranes that share an entire wing, positioned vertically between their bodies; heads and tails may face in the same or opposite directions.

(Updated diagrams from this early work can be found in a current book by Japanese origami author Kunihiko Kasahara.)