A creepy, headless ghost resembling the legendary knight, the Dullahan, starts attacking students at Hazakura Academy. Apparently, the ghost is looking for its head. Kiyoshiro, for some reason, gets caught up in the middle of this chaos…
Hiro's study files!
!ملفّاتا دراسة هيرو
¡Los archivos de Hiro!
¡Los archivos de Hiro!
sui 
Digimon
Arquivos de Investigação 
de Digimons do Hiro!
Познавательные уроки от Хиро!