User blog comment:Xilinoc/Everything but the Rain op. 8 - "The Defenders"/@comment-4620155-20130502112415/@comment-957629-20130502114602

....no he released his Shikai on Ganju Shiba because he had broken into the Seireitei and had just broken into Rukia's cell!! He wasn't taking Ganju seriously until he admitted he was from the Shiba clan and then he released his Shikai because they are a talented bunch and not to be taken lightly!!