Other mistake: At the beginning, while Wade is lying on the barrels, he throws the cigar and causes the explosion. The problem is that the cigar gets in one barrel but another one explodes instead.
Other mistake: In Osaka while Wade fights the bad guy at the jacuzzi, he cuts a guy below his knee but the angle is incorrect.
Answer: It is a possibility. In Japan, the showing of a person's genital area and/or pubic hair is considered obscene.