Hey this ghost was featured in the ghost stories podcast Kowabana on spotify! Nice to finally see a visual representative of the story, since "a tall girl with straw hat laughing with po po po sounds" is super weird and just not creepy at all. Po po po wtf? Guess I just have a poor imagination.
EDIT: hey wait... even the story here is almost identical to the podcast. from the salt, the evening runaway, white van with the ghost on the car window, and the broken jizo statue. Either the mangaka decided to do the podcast version or just uses the original or most popular story without much addition. Although, in the podcast it was referred to as "Hasshaku-sama" instead of "Hachisaku-sama" or its just the host's weird pronounciation since the woman sounds... idk, English i think.