Assassination classroom school trip! Have fun! You in the train right now anyone is there except Koro sensei

Nagisa: “wait a sec- where‘s Koro sensei!?“

Karma: “Now that you ask….i have no idea“

suddenly Koro sensei is at the train window

Karma: “uh-“

Nagisa: “KORO SENSEI!? What are you doing there??? You shouldn’t-“

Koro sensei: “don’t worry I just make myself invisible, that only my clothes can be seen!“

Bitch sensei/Irina sensei: “that’s not making it better, you octopus pervert!“