Seeing this for some reason doesn't make me feel frightened at all. I'm fully aware of what I'm getting into and I'll embrace that challenge with open arms. Work is work and as long as I reach my dream, it'll all be worth it.
First question: Why is this "anonymous" when I can see the name of manga artist Hiroshi Shiibashi at the top? And based on my Google search, he is a legitimate manga artist who is best known for Nura: Rise of the Yokai Clan. So yeah, it ain't exactly anonymous.
With that being said, this puts a lot of things into perspective. Why is Monday so hectic? Probably because Shonen Jump (the magazine in which Mr. Shiibashi is working for) is released on Mondays, which means that by this time they should start preparing for the next week.
It really is quite harsh, and the fact that free time is very limited is just disappointing. It somehow makes me understand more why these artists also wish to be compensated properly and not be devalued as simply machines. The case of the Zatch Bell author and his missing drawings come to mind.
However, I don't think this applies to all manga artists. Again, this is for those who get published in weekly magazines like Shonen Jump and Shonen Sunday. There are other magazines that are biweekly or monthly in format. Of course, there's a possibility that it also has its own hectic schedule as well (Maybe more pages to fill in since they're a monthly magazine? Not really sure.)
The monthly magazine artist responsible for titles like Ayashi no Ceres and Fushigi Yuugi said she works ten days out of the month and spends the rest of her time watching movies and playing video games. She was making about $20 million USD per year at the time of that interview. There's always another perspective.
And I think we also have to consider the culture of the Japanese work environment when we look at this. I remember reading an article (actually, a summary of Haruki Murakami's book Underground) stating that many Japanese give high regard to work that it's already usual for them to spend so much of their daily hours at work. Then again, it's also likely that not all of the minutes scheduled to work are actually spent on work.