Rin's disregard for classes brings forth the anger of his classmate Ryuji Suguro, who is smart and studious despite his delinquent appearance. During physical education class, Rin learns from classmates Konekomaru Miwa and Renzo Shima that Ryuji's goal is also to defeat Satan, wanting to restore his temple back to its former glory. After Ryuji provokes a reaper demon in the class, Rin steps in and saves him.