Kanda's memories show the time 9 years ago when Kanda (then called Yu) and Alma were children and were "Second Exorcists" living in the Sixth Laboratory of the Black Order's Asian Branch. Overseen by then North American Branch Head Sahlins Epstain (Renny's father), and then Asian Branch Head Twi Chan and her assistant Edgar (Bak's parents), they were forced to go through harsh synchronizing tests with Innocence daily, repeating the cycle of dying and regenerating. Even through their ordeals and their very different characters, Yu and Alma become best friends...