Hiruko: Jókai hunter

A school has been built on one of the Gates of Hell, behind which hordes of demons await the moment they will be free. Hiruko is a goblin sent to Earth on a reconnaissance mission. He decapitates students in order to assemble their heads on the demons' spider-like bodies. Eventually, it falls to an archaeology professor at the school to investigate the gory deaths, and discover some way to stop this demonic onslaught. (texto oficial de la distribuidora)