>>4460876
>Sumika also got over her own desires because she really loves Kanoko, she realized it thanks to Youko.
She didn't get over anything and Youko played no role in that. Before the incident she was repressing her own desires, after the incident she dumps Kanoko not only for the latter's sake but also because she realized it was painful to be in a relationship with a girl who didn't want to touch her and she didn't want to force Kanoko to do it. If anything Youko made Sumika acknowledge that her own desires are important enough to refuse to continue an one sided relationship.