 Masuyama, Takemiya, and Hagio were all roommates in an apartment later dubbed the "Ōizumi Salon" and compared to Tokiwa-sō, another apartment that housed many mangaka.Year 24 Group contributed significantly to the development in "shōjo" manga by expanding the genre to incorporate elements of science fiction, historical fiction, adventure fiction, and same-sex romance.The prevalence of "Bildungsroman" genre conventions in their works have been noted by critics.