Ninja must weigh 60kg or less!
When people imagine ninja, they often think of “running fast”, or “ability to fight”, or “powerful”, so there is a rather muscular, large image.
However, if you think about the following, that mage might change somewhat.
Ninja performed espionage in attics and under floors, made deft movements, and practiced camouflage, among other things. These would be tough to do with a large body, wouldn’t they?
Because of their work on roofs, #ninja had to constantly have tempered fingers. To train, they are said to have used bales of rice. These bales weighed about 60kg. In other words, to be able to lift 60kg in training is to be able to lift oneself, including hanging from ceilings.
Another thing is that if his name is any indication, #Shotoku #Taishi’s right hand man #Otomono #Sahito was probably slim, giving ninja that characteristic. This is because “Sahito” literally means “slim person”.