Happy Birthday Time
- Episode aired Jun 9, 2016
- TV-14
- 23m
The students fight to see their teacher one last time. A figure from Koro Sensei's past arrives with a serious grudge against the super-creature.The students fight to see their teacher one last time. A figure from Koro Sensei's past arrives with a serious grudge against the super-creature.The students fight to see their teacher one last time. A figure from Koro Sensei's past arrives with a serious grudge against the super-creature.