Rin Kujou is Saki Tenjouin's loyal and longest known friend. Rin is skilled in kendo and has been a loyal bodyguard to Saki for years, as her family has always served the Tenjouin family in this position. The bespectacled Aya Fujisaki is weak-willed and became associated with Saki after she and Rin protected her from bullies when they were children.