My daily life is when my niece grows up to treat me like a pet and I'm a slut.

My niece, Yui, has been loving and loving me ever since I was little. He seems to like naughty things, and as I listen to what he says and play with him, I get completely scorned and say, "You're my servant." Three months later, and three months later, every time we meet regularly, my appearance grows more mature, and I show off my handjobs, rap restraints, AV imitations, sex... A story of a decade in which my niece grows up to be a slut.