Ep 20. Valentine's Day Time

Assassination Classroom season 2 episode 20, titled "Valentine's Day Time," takes place in the midst of the Valentine's Day holiday. The episode opens with the students preparing to give chocolates to their crushes or to their friends. However, since the students are tasked with assassinating their teacher, they decide to use the opportunity to try to kill Koro Sensei.

As the day progresses, various groups of students try different tactics to take down Koro Sensei. Nagisa and Karma try to use their creativity to come up with new assassination strategies but are repeatedly thwarted by Koro Sensei's quick thinking. Meanwhile, the rest of the class teams up to create a giant chocolate cake filled with explosives to take down their teacher.

Throughout the episode, there are moments of comedy and lightheartedness as the students struggle to find the perfect gift for their crushes or friends. However, the underlying tension of their mission to assassinate Koro Sensei is constantly present. The students are aware that they have limited time left with their teacher and they are desperate to complete their mission before the end of the school year.

As the day draws to a close, the students present their chocolates to their crushes and friends. However, the focus soon shifts to the giant chocolate cake and the students' plan to take down Koro Sensei. The tension is palpable as they wait for Koro Sensei to take a bite of the cake.

The episode comes to a thrilling conclusion as Koro Sensei finally takes a bite of the cake and the explosives are triggered. However, the students soon discover that their plan has failed and Koro Sensei is unharmed. The episode ends with the students reflecting on their failure and the difficulties they have faced in their quest to assassinate their teacher.

Overall, Assassination Classroom season 2 episode 20 is a thrilling and action-packed episode that combines moments of comedy and lightheartedness with the underlying tension of the students' mission to assassinate Koro Sensei. With its fast-paced plot and engaging characters, the episode is sure to keep viewers on the edge of their seats.