yn is Ash's best friend and even loved with him since she was five. She has been travelling with him ever since but when they come to the new region Alola things change. yn is a orphan and as all she ever wanted was a family professor Kukuyi and Burnet gave her one. they were her new mum and dad but this happens later on the story. what we are here to talk about is the wierd boy you find in the way of getting more and more stronger. ps- ash still considers yn his sister. pps- cover art is not mine Ppps- this is based on the series