"The Gentlemen's Alliance Cross" is a manga series created by Arina Tanemura. It follows the story of Haine Otomiya, a girl who transfers to a prestigious school and becomes involved with the elite Gentlemen's Alliance. The series explores themes of friendship, love, and social class as Haine navigates her new environment and her feelings for Shinogu Ohtori. The manga combines elements of romance and comedy, featuring a cast of unique characters, each with their own backgrounds and motivations. It was serialized in Ribon magazine and has been well-received for its engaging storytelling and beautiful artwork.