Amazing Knife that Only Cuts Food

Name :
Akane Shimotani
COUNTRY :
Japan / Yamaguchi
AGE :
10
YEAR :
2009
PRIZE :
The Prize of the Chairman of Hatsumei Kyokai
COMMENTARY :
Recently there have been many murders, so it would be good if there were a knife like this. If someone tries to cut someone else with it, it plays a melody that puts its holder into a gentle mood.
Amazing Knife that Only Cuts Food