Rika Ikeda attends St. Michaela Academy, distinguished by her dark blue hair and grey eyes. As a member of the Female Crusaders under Aiko's leadership, she becomes instrumental in the aftermath of the World Restoration. She actively joins the pursuit of Yuki, who journeys through time intending to assassinate Hans and rewrite history. Alongside Aiko and Nozue, Rika tracks Yuki across timelines to safeguard the established course of events and preserve the World Restoration's hard-won outcomes.