Chapter 277 of Mairimashita! Iruma-kun , titled , marks a major shift at Babyls Academy as Lord Sullivan's security devil, Opera, officially joins the school staff. The chapter balances emotional character development with the introduction of a new, high-stakes training arc for the Misfit Class. Plot Summary: A New Teacher Arrives
The chapter concludes by introducing the Misfit Class to Opera’s "hardcore" teaching style. Opera invites the students for a simple tea break, but there is a brutal twist: the tea is served at the top of a massive, smooth mountain peak. Chapter 277 of Mairimashita
Ameri is delighted by the appointment and immediately requests that Opera provide "extreme training" for the student council, much to the horror of her fellow members. The First Lesson: "Tea Break" Plot Summary: A New Teacher Arrives The chapter
“Opera's training is hardcore. No wonder they are Sullivan's security devil I would never want to be on their bad side.” Reddit · r/DemonSchoolIrumakun The First Lesson: "Tea Break" “Opera's training is
Fans often highlight this chapter for its mix of comedy and the sheer power level of Opera, who is rumored to be .
The chapter begins with a rare moment of vulnerability from , who is seen in a deep depression after losing his temper during the "Heartbreaker" event. Fearing that Iruma will resent him, he is distracted when Opera suggests a surprising solution to his upcoming absence: Opera will become a teacher at Babyls.