Board Thread:Questions and Answers/@comment-2211792-20130312103855

Nimaya has revealed how exactly Kenpachi obtained a zanpakuto: by stealing an asauchi from a dead Soul Reaper. Could it be the same with Tosen and his deceased friend? Was the zanpakuto he took from her actually an asauchi? She did die rather soon after she had joined the academy; she probably had no time to shape her asauchi into a real zanpakuto. 