From January 30th to February 14th, You can get the Pikachu colored Pichu if you want in order to encounter the Notched Ear Pichu in Ilex Forest. Don't believe me, here's the link: https://www.pokemon.com/us/special/shiny_pichu
Tell why or why not you will get it, 'kay?
Tell why or why not you will get it, 'kay?