What is the purpose of author to write makato and cowrie shell?

There isn't a known story or book titled "Makato and Cowrie Shell". It's possible you're misremembering the title, or it's a lesser-known piece.

To help me figure out what you're looking for, could you provide more information?

For example:

* Do you remember any details about the story? Like the characters, plot, or setting?

* Is it a children's story, a novel, or something else?

* What language is it written in?

With more context, I might be able to help you find the story you're looking for and understand the author's purpose.