Mumei is confined in a classroom full of traps. 
Trying to escape along with his comrades, they set off the traps and are sent to another world.
A strange old man was waiting there. 
Mumei's classmates exhaust themselves without skills going up against an enemy that gets stronger the more he drinks.
A sense of foreboding reaches the bewildered Mumei.
I can't allow only you guys to pass.
لا يمكنني السماح لكما وحدكما بالنجاح
Das geht ja nicht an,
dass ihr als einzige besteht.
No puedo dejarlos aprobar.
No puedo dejaros aprobar.
Comme si j’allais vous laisser
être les seuls à réussir l’examen.
Non posso mica permettere 
che passiate solo voi due, che credi.
Não posso deixar que só vocês passem no teste.