Adult Hachi is an urban legend from Japan Forum 2ch. Just like the name Hachi, he is described as a tall female ghost who laughs strangely like a male "mother-in-law".
The description of clothes in this paper is wearing white clothes, but according to different records, it seems that different people see different clothes, for example, some people see white mourning clothes. She will imitate the voice of the relatives of the parties and let them relax their vigilance. People who are confused by eight-foot adults will die in a few days. Usually, children are easily confused.
Legend has it that she was originally sealed in the enchanted land by the Dizang King Temple, but reappeared because the seal was destroyed.
relevant information
There are 6 works in the series of urban mystery stories, which are 5 traditional mystery stories and the last one. In the five stories, the girls who appeared separately and adapted from the prototype of ghosts were densely sprouted, and their love with the man was so sweet that their stomachaches.
There are also some widely circulated urban legends in Japan. For example, the story of an eight-foot adult in the series "Mysterious Urban Tales" is roughly the story of "a woman who is eight feet tall and dressed in white is good at imitating the tone of her family to charm children and eat them".
Of course, there are also various versions of the Japanese "eight-legged girl" legend. For example, sometimes a white dress is a dress, or it makes Bobo laugh.