he said the thing! it took ririmu a while to understand what happened though, she had to ask chat about it so it took some time for her princess brain to understand, so, the very idea that he was not using his illusion was in fact part of the illusion itself, and so, asking when did he start using it is point less question because they were all under the effect of kyoka suigetsu from the very beginning, then ririmu thanks chat for helping her understand it

ririmu is very right when she say aizen is not the kind that would die in here