How many letters does the top answer for “wrote thousand cranes” have?

The most common answer is kawabata (8 letters).

Crossword clue: wrote thousand cranes

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

kawabata 8 letters wd-fact-v3

author of thousand cranes 50% similar → kawabata

wrote a thousand plateaus 50% similar → deleuze