kenpachi's sword has a name, but zaraki kenpachi didnt care to know its name. zaraki didnt know it had a name, thats why ichigo was able to beat him in the first place. oh i always wanted to ask this, when zangetsu gave ichigo the "nameless zampukon" called "asautchi" or something, doesnt it mean it has a name? would it work if you called "asautchi!"? (just wondering)