What's a Kohri-oni?

I played a kind of tag with my club's members on Wednesday. There are many diversions as tag in Japan. I played "Kohri-oni". It's similar to tag. Its rule is little difficult than tag. First, we must elect a tagger. A tagger has to touch the other members. A person who was touched by the tagger mustn't move from there. When the tagger touches all members, the game finishes. There are some local rules these diversions a kind of tag. For example, I know a rule called "Otasuke", but my friend who is from Fukuoka doesn't know this rule. "Otasuke" means "help". In my living area, we decide if apply this rule. When we apply this rule, the tagger has to play the game at a disadvantage because if a person who can move touches a person who was touched by the tagger, the person become to be able to move. It's "help". But we didn't apply this rule when we play in large area because the game never finished. We used this rule when we play in small area or the tagger is a fast person. So we always could feel good thrill. I think children are clever about diversions. "Kohri-oni" is interesting because we can't know well who was touched or not. So it may be happen the tagger talks with a person who isn't touched side by side. (230words)