Ryunosuke Akutagawa is probably best known outside Japan for ¡°Rashomon¡± but ¡°Kappa¡± is considered to be his masterpiece by fans and scholars. Narrated by a ¡°mental patient¡± and introduced as a tale overheard directly by the author, ¡°Kappa¡± is a fantastical satire in the ¡°Gulliver¡¯s Travels¡± mold.