Bessatsu MargaretBessatsu Margaret.

Bessatsu Margaret (別冊マーガレット, Bessatsu Māgaretto; lit. 'Margaret additional volume'), or Betsuma (別マ) for short, is a shōjo manga magazine published monthly in Japan by Shueisha since 1964. The stories featured in it are noted to have an emphasis on character development, focusing on themes of interpersonal relationships and settings of everyday life.