One day in junior high school, Tomo was roped into helping Rikka develop her apparent abilities. Rikka used Zener cards to test clairvoyance and determined the gender of who entered the classroom to test foresight, both with negative results.
Durante la secundaria, Rikka intenta Tomo la ayudara a entrenar sus habilidades ESP aparentes.
Pendant ses études secondaires, Rikka entraine Tomo à éveiller ses compétences ESP.