1. Zashiki Warashi
The Zashiki-Warashi is a ghost child. They like to dwell in large, well maintained, fancy houses. They enjoy playing pranks on their fleshy housemates and would run around laughing without being seen. However, seeing a Zashiki-Warashi or having one in your home is considered good luck and could even bring you great riches.
They usually look like five or six year old children with bobbed hair and red faces. They can be a boy or a girl wearing traditional Japanese clothes with old fashioned hairstyles. But it is very difficult to say specifically because it is very difficult to see them as only home owners or children are able to see them.
Zashiki-Warashi aren’t the normal ghosts because they do not haunt for revenge. Instead, they act just like trouble-making kids. Moving things around, leaving children footprints in the house, talk out loud without being there and play what musical instruments you have any time of day. The scary thing is, sometimes you might not get only one Zashiki Warashi but multiple of them in one go.
The Zashiki Warashi are considered gods of luck. You might get annoyed of their presence but having them around your house would give your household property and riches. But if you for whatever reason treat it wrongly and drive them out of the house, bad luck befall upon the household which in the worse case possible could kill the whole household due to some misfortune.