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
The existing Babyls staff are largely intimidated by Opera's fearsome reputation. While Kalego is visibly distressed at the idea of working with them, the cheerful Robin is thrilled to have a "junior" (kouhai) to mentor—a dynamic Opera surprisingly seems to enjoy. Plot Summary: A New Teacher Arrives The chapter
“Iruma getting dodgeball execution cannonball flashbacks and knows just how screwed they really are.” Reddit · r/DemonSchoolIrumakun [DISC] Mairimashita! Iruma-kun Chapter 277: Opera-sensei While Kalego is visibly distressed at the idea
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.
Students must reach the peak before their tea gets cold.