Kamen Rider Wizard S01 E50 The Important Thing is...

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

Haruto finds he must battle the White Wizard on his own for Koyomi's sake after Kosuke uses the last of his mana to disrupt the Sabbath. Elsewhere, Yuzuru and Yamamoto come to their senses and plan to fight alongside Mayu and Haruto for Kosuke.