One-Punch Man Manga Volume 5 features story by ONE and art by Yusuke Murata.

To stop a Demon-level crisis, Saitama and company head toward the action. However, even Class S heroes prove to be no match for the Deep Sea King! In order to protect the good citizens, our heroes will need to summon all of their courage and confront this threat in volume 5 of One-Punch Man!