The Twitter account for Shogakukan’s Monthly Sunday GX magazine has revealed that Rei Hiroe will resume his Black Lagoon manga in the June 2017 issue of the magazine on May 19, 2017. Monthly Sunday GX had revealed in December 2016 that the manga would resume in Spring 2017. The manga has been on hiatus since early 2014.
Hiroe launched Black Lagoon in Shogakukan’s Sunday GX magazine in 2002. VIZ Media publishes the manga in English.