User blog comment:Flamesword300/Overlooked? Ichigos true strength/zanpakuto discussion/@comment-5681812-20130621063411/@comment-5681812-20130621143505

@ sternritter. When he was almost giving up after the soul society was defeated, he told his dad that Aizen's reiatsu was way too much. His dad responded by telling him that he (Ichigo) was the only one who could tell the magnitude of Aizen's reiatsu.