This is stupid. They're not even in their loss, since MC rejected Kuro in a gentle, private way and even continuously apologized. In contrast, Kuro rejected him in a premeditated, public and humiliating way. Shiro actually fucking tried her hardest to get MC, but thanks to Kuro's plan she also got publicly rejected and it was all for nothing. In other words:
https://m.youtube.com/watch?v=17KmNrG9pE4