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Lupe Fiasco is penning a novel 140 characters at a time. 

The emcee has taken to Twitter to write what he calls an "Afro-Futurist novel" titled "Teriyaki Joe: Neo-Harlem Detective." 

Over the last several days Lupe has already written three chapters of the novel and promises a fourth installment soon. 

This isn't the first time Lupe has made waves on the micro-blogging website.  Earlier this year he went on a Twitter rant following Kendrick Lamar's verse on Big Sean's "Control."  During the tirade, he responded to the verse by impersonating artists such as Rick Ross, 2 Chainz and Pusha T.  

Lupe Fiasco is currently on the road promoting his upcoming album Tetsuo & Youth.  

Check out his novel ... Twovel? ... on his official Twitter!

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