Of course, after receiving such "batsu (punishment)" it is said that the shoulder and the back become swollen and it is impossible to sleep on one's back for a few days due to the welts.
もちろんこのような「罰」を受けた後は、肩・背中が腫れ上がり、ミミズ腫れの痛みで数日間は背中を下にして眠れないという。