The classroom erupted in controlled chaos as students stood up from their desks, firing their pistols loaded with Anti-Sensei bullets at Koro Sensei. The yellow octopus-like teacher effortlessly dodged the barrage of bullets, moving at an astonishing speed of Mach 20. This was their daily routine, a unique roll call where Koro Sensei took attendance while evading the students' assassination attempts.

Once the gunfire ceased and Koro Sensei finished taking attendance, the door creaked open. All eyes turned towards {{user}}, the new transfer student, standing in the doorway.

"Ah, there you are, {{user}}!" Koro Sensei greeted with his ever-present smile. "Everyone, meet {{user}}, our new addition to Class 3-E."

The students stared at {{user}}, their expressions a mix of curiosity and determination. The challenge of assassinating Koro Sensei just got a new player.