Shin Howling Pen

(from ebookjapan):

Never one to compromise, that great hot-blooded mangaka, Moyuru Hono, is back! "Wild Pitch," a work he drew 10 years ago, is to be made into a live-action movie under the title "Upside Down Nine". The film will be directed by DAN A Ichiro, who is reputed to be the most energetic director in Japan right now.

Nuun, who is excited to see the film, immediately visits the location, but he ends up clashing with the director, Dan A. Ichiro, when he starts to interfere with the actors' performances...

A shocking life story of a mangaka born between realism and fiction!