1923 Japan,
There were two kingdoms one was kinjo and second was hastokaji. One day it was heavy rainfall on that day a man's called kanemitsu,
his wife called tamiko was in hospital because she was pregnant. After sometime they got a baby he was a boy, they both named him Kubukimaru. He was only six years old when his mother and father died because the hastokaji kingdom king called Yasuko killed them, he was an evil king. Kubukimaru's parents died reason was a mystery the king said to his soldiers that no body can tell anyone about this. After Kubukimaru's parents died he was living with his grandparents, his grandma name was Midorin and grandpa name was Kensuka.
Kubukimaru had only one aim to kill the evil king Yasuko for his parent's mysterious death.