Sauce Of The Day: Kuro Gal ni Natta kara Shin`yuu to Shite Mita Pt1

Rui and Shion are best friends since childhood and they always hung out together. One day at the beach Rui went in one direction and Shion the other due to hanging out with a girl however what Shion doesn't know is that there's a girl that has been stalking him for a while and sneaks him and knocks him out causing him to take a mysterious pill that turned him into a female and the rest was history.