Tatsuki Fujimoto 17-26 Season 1 Episode 8

Walking into school one morning, Mitsuko is shocked to see a humiliating painting of her! It was painted by her little sister Kyoko and since it won the art contest, the painting will be displayed for the entire year. Vowing to avenge this, Mitsuko decides to shame her sister in the same way. As she works on her painting, Mitsuko reminisces about her strained relationship with her sister.