Reaching the Hokage tower, the secretary is surprised seeing a stranger, but after some time looking at me she finally seems to have undergone enlightenment and recognize me. Now that I think about it I must've changed a bunch, I am in the middle of my growth spurt a.ka. puberty, so I must have changed a lot for these people that haven't seen me in some years.
Thankful besides having grown up, and have some of my features in the middle of transforming from a child to an a.d.u.l.t, I have also changed a lot after making the contract with the Ocelot clan, so the cat=like predatory eyes and some other features may have put the poor secretary off guard.
Then there are my clothes, as I've grown a lot, my clothes had to go, so I spent some time making clothes from pelts, of animals that I hunted during my stay with the Ocelots. I should've taken a bath and changed before coming here...
But everything was somewhat resolved when I gave the correct Anbu password and my numbers, so she quickly called the Hokage to authorize my entrance to his office.
Entering his office, Hiruzen was truly surprised with my new appearance, and aura, any good ninja can feel the difference, I am more 'wild' if you have to but it into words, this is due to a series of factors, manly my changes due to the contract, followed by an extended period of time living with animals.
Seeing my changes Hiruzen couldn't help but reminiscence about Jiraya, something similar happened to him, he reverse summoned to mount Myoboku and, when he returned he was a completely different person, besides becoming stronger, he becomes more responsible and mature, so seeing Aizen like that brought some relief to Hiruzen, an improvement on mentality is always more difficult than physical, the physical improvement you just have to do exercises, but for your mentality to change, it could be years without result, and some people spend their whole lives without one.
"I see you have returned Aizen, how was your 'Vacation', I just hope that everything has gone good".
Aizen nodded at the Hokage Before saying"It was good Hokage-sama, I reverse summoned myself and found myself on the ocelot clan, they were pretty good guys. You must have to see my changes in appearance, this is due to signing the contract with then. I've learned a lot of new techniques too, but most importantly, I was able to relax a bit"
Hiruzen nodded, and seem to search for some type of paper in one of his drawers, picking up a scroll and some papers he gives then to me "Is good to have you back, unfortunately, I will have to already send you on a mission, You were recommended by Mito-sama herself so I think you will find it interesting, this is an escort mission she requests. The mission is a week from now own, just hope you can accept, your unique capabilities will be very beneficial to it"