Wait...
Blue has 4 letters and Exorcist has 7 letters... 4 times 7 equal 28. Rin and Yukio both counted together is 8 letters so 8-28 is 20. The anime started to go filler at around episode 15 which means 20-15 = 5 and Kamiki has two familiars and Shiemi has 1 familiar that fights with her. So I take 5-3 = 2
================================================================================
Blue Exorcist season 2 confirmed
