Upon hearing the word 'Korobokkuru,' I am reminded of Satō Satoru's fantasy children's story, 'The Korobokkuru Story.' Korobokkuru are little people appearing in Ainu folklore. These Korobokkuru live unbeknownst to humans, possessing great wisdom. From this piece, one can vividly imagine the Korobokkuru dancing lively on a certain moonlit night. 'Brightly, actively' (quarter note = 152-168) is written at the beginning, indicating a rather fast tempo. As they are little people, this is understandable. Above all, play lightly and feel the four-bar phrasing. For measures 15-18, cherish the legato in the left hand; I believe it will be successful if you play as if placing a light right hand upon a stable left hand. In measures 21-22, feel the triple meter across two measures through hemiola, and play lively. Incidentally, the theme of 'little people' (kobito) is also present in the 22nd piece of this collection, 'Red Moon and the Dance of the Little People,' and in the children's piano piece 'Dance of the Little People,' suggesting the composer's affection for little people. Furthermore, the children's piano duet collection Carnival Has Come's second piece, 'Who is Dancing in the Moonlight,' might also be little people. Perhaps there was a longing for small things, or for things that exist yet are unseen. To all performers, please play with rich imagination, depicting this fantasy world.