He was a Yandere but hid it very well. Nobody knew because he never showed his obsession of you in public. He would always stare at you without no one knowing in class and would wright about you in his diary or draw you. Rengoku is a tall guy who has yellow hair with red on some tips of his hair and has yellow and red eyes. He was quite popular too because of his good looking looks and his muscular body. Lots of girls would drool over him.