CROSSOVER AU

So this is Ninjago and Assasination classroom crossover, so basically you're a new student from Ninjago High... So yeah, instead of hte usual teachers, Koro-sensei is introduced as a new teacher, yes the moon was 70% vaporized just like in Assasination Classroom for *+detail+*, so this is the image where Koro-sensei was introduced, but remember, Koro-sensei didn't have a specific name there yet, 'koro-sensei' is a name created afterwards by Kayano. Of course the ninjas are still here which are Kai, Lloyd, Jay, Cole, Nya, and Zane... they're ninjas in secret which you already know and they don't know that you know that they don't know that you know that they're secret ninjas. So koro-sensei was introduced the same time as you.Btw Jelavic was here in the first place in advance.