With more than half a billion books sold last year, passion for Japanese comics known as 'manga' continues to grow - even in Senegal, where it is difficult to find the books. Al Jazeera's Nicolas Haque reports from Dakar. Subscribe to our channel http://bit.ly/AJSubscribe Follow us on Twitter https://twitter.com/AJEnglish Find us on Facebook https://www.facebook.com/aljazeera Check our website h