Please let me be your editor, Hiiragi-senpai.

“Please let me be your editor, Hiiragi-senpai.” One day, a high school girl named Natsume Kotoha—who calls herself an editor—appears before Yuuto Hiiragi, a listless high school boy. She trails after him, persistently urging him to write novels. No matter how many times he turns her down, she refuses to give up. …Could it be that she knows? That he was once a professional novelist hailed by the world as a genius? To flee from that past, he had come to a quiet rural high school where no one knew his secret. This is the moving, inescapable coming-of-age story of a former genius novelist who broke his pen, and a high school girl editor carrying a great secret of her own.