For every manga artist distracted by something like IdolM@ster, there's a vast majority who have literally unhealthy dedication to their work. If you were impressed by Fairy Tail creator Hiro Mashima's work on that series, not to mention contributions to its anime, and regular social media outreach, wait until you read the marathon work he has planned for July.
Mashima will be writing three chapters of Fairy Tail for issue 32 of Kodansha’s Weekly Shounen Magazine , on sale July 10. In a move without Shounen Magazine precedent, issue 33 on July 17th will also feature three chapters, bringing the serialized total to 128. He then bumps his output to 150 pages with magazine special, out the 20th.
Let's just hope that he manages to stay out the hospital.