Kurumizawa Yoshihiko no Gukou

The year is 1971, and the once-popular manga artist Yoshihiko Kurumizawa is in a major slump. The pressure builds as each new submission is rejected. But one day, he meets a young, promising artist named Kensaku Hata. When he sees Hata's wonderful work, Kurumizawa hatches a dark plan...
(Source: MANGA Plus)