Blue Exorcist Season 4 Episode 8 English Dubbed Episode Title: Happy (Merry Xmas) Birthday! Episode Description: Lightning and Suguro bear witness to Section 13 as it appeared right after the Blue Night, and Mephisto reveals the truth about the research that was being conducted there. Meanwhile, Shiemi suddenly expressed her intention to decline to take the Exorcist Certification Exam and to leave the school.