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.
This is the secret technique, Jagan Keibaku!
إنّها التقنية السرّية، جاغان كيباكو
Geheimtechnik: Jagankeibaku!
Ojo de Serpiente Paraliza Ranas
Ojo de Serpiente Paraliza Ranas
C’est la technique secrète
de l’étreinte du serpent !
Questa è la tecnica segreta,