Second season.

Miyagawa Atsushi is an 11-year-old boy who is 180 centimeters tall. Since he has a grown-up looking build but acts his age, he has always been running into troubles. On the other hand, his 17-year-old elder sister Atsumi is only 137 centimeters tall. Even though she has a childish looking build, Atsumi takes good care of Atsushi.

One day, class 3-E of Kunugigaoka Magic School receives a special mission: to kill their homeroom teacher, the Demon King Koro-sensei. To increase their chances of succeeding, the class searches for the three most powerful warriors—Karma Akabane, Itona Horibe, and Ritsu—who later join their company. Even with their help, accomplishing the mission becomes an insurmountable task as they are not the only ones after the Demon King's life. Koro-sensei Quest! tells the comedic adventures of Nagisa Shiota and class 3-E as chibi magical students. Trained by none other than their very target, the students encounter challenging, yet hilarious situations all through the perilous mission of defeating the Demon King. [Written by MAL Rewrite]

Kyousuke Hyoubu, an ESPer who was betrayed many years ago, is now one of the most powerful ESPers—and also a fugitive. However, behind that glare lies a kind heart. His main mission is to save ESPers who are mistreated by humans, even if that be by force. Through his methods, he has saved many ESPer lives and gained the loyalty of those he has saved. The name of his group: P.A.N.D.R.A. (Source: ANN)