Touka Kishi

A sixteen year old high school student who is Kyousukes little sister. She is also an employee of Hiizumi Life Counseling. Just like her brother she is a youkai with superhuman strength. She has a crush on Akina which Kyousuke is not pleased with it. In the manga unlike her brother she can not completely control her strength even with a seal. In the anime she appears to have better control over her strength.