The third episode of Colorful Rainbow
Eimī defeats Kyoko, who lands in the nurse's office after. The next day, she questions her power. Ryo talks to her, Keiti and Kyoko about their powers. He warns Kyoko not to get so enraged, or else she'll become the Black Rainbow Princess she became the day before. As for Keiti, he tells her that he forgot to tell her that her best friends were Rainbow Princesses as well, but there is still 4 more.