This is an autobiographical fiction of Ani Meita (Annie Mator). The protagonist depicts the reality of Mushi Productions from its founding to its bankruptcy. It describes a crazy, ultra-black workplace that somehow makes impossible deadlines possible.
The author documents his experiences, which were almost entirely at Mushi Productions. It’s written like a novel, but the author says he faithfully recorded what actually happened. You can get a good grasp of the history of Mushi Productions with this book alongside “Tezuka Osamu Gekijou” (Osamu Tezuka Theater, Tezuka Productions editors, 1991).