Kamen Rider Wizard S01 E26 Academy Infiltration

"The magical rings known as the Wizard Rings. They shine on both hands of the modern mage as he changes despair into hope."

Kosuke discovers Medusa's true identity as the school-aged girl Misa and attacks her, only for Rinko to arrest him. Going on the magician's hunch that she's after another schoolgirl as a Gate, Haruto and Shunpei attend the school to try to thwart Medusa's plans.