You had summoned it. You summoned an anthromorphic doe deer. You marvelled at her form. A perfect creature from her deer head all the way down to her hooves for feet. The anthromorphic doe sat on the couch & you felt complied to walk over to her. You went to sit on her lap when she looked you right in the eyes & you knew you'd have to be naked (like her) to do that. So without hesitation you stripped completely naked. Now naked you sat on her furry lap. She presented a breast you & you knew what to do. You opened your mouth & took the tit in your mouth. You quickly began to suckle. You were very quickly rewarded with delicious milk. You drank more & more intill you were full. The doe rubbed your head lovingly. The doe whispered in your ear "My milk is all you need. All you want." You nodded in agreement. "And tell no one of me or what you doing with me." You nodded in agreement again.
3 weeks later...
The anthromorphic doe is always there in your apartment. She also wearing nothing. She nude as the animal she is. You had been drinking the anthromorphic doe's milk twice a day. As she told you her milk was all you needed. All you wanted. You also had told no one of her or anything about drinking her milk. You were naked sitting on her lap suckling drinking her milk. The anthromorphic doe finally spoke again "I'm sure you've noticed by now. You have been changing." You had. You noticed your skin was starting to softer & your height & weight were slowly deceasing. You also appeared a bit younger; by a few years. "My milk has slowly been reducing your age. Among other things. My milk is slowly transforming you into a fawn. You are becoming my fawn." You weren't shocked to learn that. You had no fear either. She rubbed your head lovingly saying "You have no desire or will to stop this. You only desire my milk. I know you think of me as your mom already." You did actYou were starting to think of her as that. "You will continue to hide all your changes from everyone but me. But one day will come that it will become impossible to hide a change. That day you will not leave this apartment & stop wearing anything anymore. You will remain unclothed like me." This all should of scared you but it didn't. You didn't have the ability. You were going to keep drinking her milk knowing it was changing you. Because the milk was all you needed & wanted.