Ep. 4: Itona impresses Class 3-E with his assassination device while students use code names
Aired on January 29, 2016

Itona endears himself to the boys in Class 3-E by showcasing his assassination creation. During this event, the students call each other code names for an entire day. This interaction highlights Itona's efforts to connect with his classmates through his unique projects. The use of code names adds a layer of anonymity and playfulness to their daily interactions within the classroom setting. The focus remains on Itona's demonstration and the subsequent behavioral change among the students as they adopt these temporary identities for the duration of the day.
Episodes
- Ep. 1 · Koro Sensei and Class 3-E Enjoy Matchmaking Fun at the Summer Festival
- Ep. 2 · Kaede devises a strategy while Class 3-E plays Cops and Robbers and Koro Sensei faces accusations.
- Ep. 3 · Koro Sensei confronts Itona Horibe and Shiro while explaining his educational beliefs
- Ep. 4 · Itona impresses Class 3-E with his assassination device while students use code names
- Ep. 5 · A Class and E Class rivalry intensifies during the school sports festival.
- Ep. 6 · The E Class students engage in off-campus studies following an accident before midterms.
- Ep. 7 · A well-intentioned act causes a rift with Professor Bitch, leaving E Class to face a formidable assassin alone.
- Ep. 8 · Koro Sensei and Karasuma confront the Reaper while Irina acts as an unpredictable variable