Sayonara, Zetsubou-Sensei Chapter 140

Published by Kodansha and officially licensed by Omoi.

Sayonara, Zetsubou-Sensei vol. 1-4 Translation/Adapter: Joyce Aurino Lettering: Foltz Design Sayonara, Zetsubou-Sensei vol. 5-8 Translation/Adapter: David Ury Lettering: Foltz Design Sayonara, Zetsubou-Sensei vol. 9-10 Translation/Adapter: Joshua Weeks Lettering: North Market Street Graphics Sayonara, Zetsubou-Sensei vol. 11 Translation/Adapter: Joshua Weeks Lettering: Aaron Alexovich

How is manga on Omoi licensed?