Board Thread:Questions and Answers/@comment-27015288-20160119152648/@comment-44061-20160121190425

1.) Yamamoto displays confidence, arrogance is for those that think too much of themselves such as Aizen. Also Yamamoto never claimed he can see through Aizen's Illusions. He said he can sense the reiatsu coming off the blade that hand physcially attacked him therefore knowing that the blade and Aizen were real and that they were not illusion.

2.) We dont know what he used, thus why I said possibility. Besides its far more dangerous to the surrounding area as well easier to track the reiatsu of a Shinigami in the Human world especially if said someone is of captain and lieutenant level.

Lastly Omeada commenting on what he can sense has nothing to do with whether Aizen can conceal his reiatsu. This concept has been shown up and down the series as a situation of control. Reiatsu is familiar to those who possess a familiarity to its wielder. Commonly felt as a presence. Shunsui spoke on the issue of reiatsu sense. It allows one to feel and pick up on reiatsu. Your not actually seeing a person as if you see them with your eyes. In the battle you use mostly your reiatsu sense. Hiding or manipulating ones reiatsu is not impossible. Isshin hid his and Ichigo's with a barrier which Aizen couldnt even sense. Shunsui in his battle with Lille he presented two ways he fooled Lille's reiatsu sense. Also Aizen's whole this is that he can use Illusions. If not for the general limitation in skill or how effective reiatsu sense can be used didnt exist nobody would be the slightest bit concerned with the illusions. Meaning by and large most characters use their normal senses and its seems very likely that as I stated previously, from what we have seen and been told reiatsu sense is not foolproof nor is it exact in the way it works. Hence why I said practice and experience. Also another point of fact Kyoka Suigetsu only affects the 5 senses. So if you want to complain that the situation one way or another doesnt make sense then question Kubo. Anything else is speculative on your part.