Board Thread:Improvements and Issues/@comment-1409915-20140307195609/@comment-8986886-20140312205719

Primarch11 wrote: Didn't she say "Come on out" before revealing her Zanpakuto's name? wouldn't that be the release command?

Yachiru had already cut Guenael, using her Shikai. She only manifested the Zanpakuto spirit afterward, to show him how it was done. When Ichigo did his Bankai training, in ch.133, Renji appeared and brandished his Shikai. He then willed Zabimaru's spirit to manifest itself, explaining that by doing so, he was close to achieving Bankai. However, Renji never spoke the Shikai release command, so it seems to be unrelated to spirit manifestation.