Definition & Meaning of "class S"

What is "class S"?

Class S refers to a genre of Japanese fiction, often found in manga and novels, that focuses on close emotional relationships between schoolgirls. These stories typically depict deep, intense friendships or romantic feelings, but the tone is usually light and does not involve explicit content. Class S became popular in early 20th-century Japan and often portrays these relationships as a phase in a girl’s life before moving on to adult responsibilities. The term "Class S" highlights the setting, which is often a school, and emphasizes a bond that is special but temporary.