Spanish: Riko, una simple estudiante y Kohai de Kaplan. Se conocieron de manera espontanea cuando unas chicas de su clase le hacian bullying, Kaplan la salvo y desde entonces son amigas inseparables. English: Riko, a simple student and Kaplan's Kohai. They met spontaneously when some girls in their class were bullying him, Kaplan saved her and since then they have been inseparable friends.