In Ghost Destroyer's Blade, You Douzi marries Shan Yi.

You Douzi finally married Shan Yi, who fell in love with You Douzi when he first saw her. One day, Shan Yi suddenly called You Douzi out for a walk, and then Shan Yi confessed his love to You Douzi very loudly in the forest. As a result, not only Charcoal Jirou and Inosuke, who were outside the forest, could hear it clearly, but also Youdouko, who was struck by the direct hit, became unable to hear the voice before she went to bed that day, and a few years later, Youdouko and Zenyi were married.

The girl's appearance is that of an oni girl with long hair, a pink kimono, a black feather weave, and a bamboo tube in her mouth. She wears her hair in a bun before she becomes an oni. She has a lovely face and is a popular beauty in town. In her early days, she was afraid of the sun because she had become a ghost, so she used to hide in a special box behind her brother's back by making her body smaller. After remodeling her body so that she can sleep instead of eating people, Youdouko is able to suppress her ghostly instincts with reason, and fights ghosts in order to protect human beings.

The plot:

It is the Taisho period in Japan. Legend has it that when the sun goes down, evil spirits come out to eat people. There were also ghost hunters who killed the evil spirits and protected the people. Charcoal seller Charcoal Jirou's ordinary and happy daily life changed drastically the day his family was attacked by evil spirits. His mother and four younger siblings were killed, and his sister, Nitouko, who survived with him, was transformed into a violent ghost.

Under the guidance of a ghost hunter, Charcoal Jirou, who aspires to become a ghost hunter, sets out on a journey with the ghost-turned-but-still-sane Kidouko. Through hard sword training and life-threatening trials, Hajiro becomes a member of the Ghost Hunters' organization, the Ghost Killers. In order to turn his sister, Douko, back into a human being, to crush the evil ghosts that killed his family, and to break the chain of grief, the young man's battle with ghosts never stops. When happiness is destroyed, there is always the smell of blood. Even if my body is destroyed, I will kill the evil spirits!