Shiemi is Rin's class mate and friend. Before she met Rin, Shiemi tended her grandmother's garden while her mother ran an Exorcist only shop inside True Cross Academy. During her encounter with Rin and Yukio, they were able to discover that Shiemi was having her life force leached out by a Demon. After Yukio exorcised the demon, Shiemi finally decided to become an Exorcist and started to attend class. It was later revealed that Shiemi had talent in becoming a Tamer, as she was able to summon an infant Greenman Spirit she named Nii during class. It is apparently a rare talent to possess amongst the Exorcists, where there are only a few who can control demons and fight. She also tends to be shy.