Casterman

Casterman is a publisher of Franco-Belgian comics, specializing in comic books and children's literature. The company is based in Tournai, 90 kilometres southwest of the centre of Brussels, Belgium.

From the Wikipedia article “Casterman”, licensed under CC BY-SA 4.0.

Comics and manga publishers typically acquire through creator pitches, portfolio reviews at conventions, contests and agents. A pitch package normally includes a series synopsis, character designs and several finished sample pages. Many publishers post open-submission windows; outside them, unsolicited material may be discarded.