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.
You're as caustic as ever.
أنتِ حادّةٌ كعادتك
Wie verbittert du immer bist.
Tan gruñona como siempre.
Tan gruñona como siempre.
Toujours aussi acerbe.
Quella lingua pungente
non te la toglie nessuno, eh!
Ácida como sempre, hein?