"Sekaiichi Hatsukoi" is a Japanese anime and manga series that follows the romantic and professional lives of editors working in the manga industry. The story primarily focuses on Onodera Ritsu, a young editor who transfers to a new publishing company and encounters Takano Masamune, a talented and assertive editor. Their relationship evolves as they navigate the challenges of their careers and personal feelings. The series explores themes of love, ambition, and the complexities of relationships within a competitive work environment. It is known for its engaging characters and emotional storytelling, appealing to fans of the yaoi genre and those interested in the behind-the-scenes aspects of the publishing world.