Nacchan, a pear girl and Siichan, a pear boy are great friends.
They are playing joyfully this month, too.
It seems Nacchan found bugs in the mysterious cave.
‘Sii--cha--n, lets exterminate bugs in the cave with jewels.’
‘OK～～～, Naccha～～～n.’
Exterminating bugs in the mysterious cave has begun.