Kobayashi and his editors collaborated on the plotlines. Kobayashi would then draw the basic illustrations for each chapter before passing his material to assistants to finish. As the series' manga artist, Kobayashi also designed the cover art. Originally, the fifth volume's front cover was to feature Akira Takano, but after re-reading the volume Kobayashi concluded that since much of its plot in that volume revolves around Karen Ichijo, she should be on the cover instead. Desiring to feature a male character, he placed Harima on the cover of volume six. Kobayashi designed a poster to commemorate the ending of the series with the final chapter of "School Rumble Z".