Datsusara 41-sai no Mangaka Saichousen: Ousama Ranking ga Bazuru made

This is an essay manga in which Sousuke Toka, the author of Ranking of Kings, looks back on his past days of frustration and difficulties. In his 20s, he had tried to become a manga artist, but it didn't work out, and he was forced to get a regular job. More than a decade later, he made the momentous decision to take another shot at his dream. The story depicts his process of getting back into manga-drawing, filled with anxiety, setbacks, courage, and determination.

(Source: East Press, translated)

Note: The chapter count includes a volume-bonus chapter.