I would've made my own contest entry long ago, but life happened and unfortunately I had no energy or motivation to write my up dark version of Shiro.

My original intention was to also gender-flip Shiro purely for funsies. There's a point in his/her backstory where Shiro discovered that life is too short to be unhappy and depressing, which led to the canon male Shiro everyone knows and [s]loves[/s] hates. In the female villainous, I would've merely reversed that having her give into her primal desires and base emotions.