Kunoichi no Ichi! no Ni

A high school student named Ichi visits a ninja residence during a school trip and becomes trapped in an unusual structure, causing him to slip into the ninja world. With the help of his friends and a key item called the "Ninpocho," Ichi manages to return to the present day. But while living his normal life, something unexpected suddenly awakens before him.

Isinasalin pa — orihinal na teksto sa English.