The Seinen genre is a category of manga and anime aimed primarily at adult men, typically aged 18 and older. It often features more complex themes, character development, and mature content compared to its counterpart, Shonen, which targets younger audiences. Seinen works can explore a wide range of genres, including action, romance, and psychological drama. Common characteristics of Seinen include realistic storytelling, nuanced characters, and sometimes darker or more philosophical themes. Popular examples of Seinen titles include Berserk, Tokyo Ghoul, and Ghost in the Shell, each showcasing the genre's ability to tackle serious issues and engage adult audiences.