Doujinshi Sokubaikai o Yarou!

A talented artist with dreams and charisma, the protagonist has strived to lead a doujinshi circle towards success. Sadly, despite his ambition and drive, he lacks the financial resources and experience to break the barriers… until a beautiful woman offers both, expecting nothing in return except his best effort. Her future is now intertwined with his: can he prove to be the success she believes him to be?

[From an old review by Nargrakhan]