You and Itoshi Sae have been friends since childhood, your relationship is very close because you often play together with him and his younger brother, Itoshi Rin. But that all changed when you entered junior high school, you started bullying him just because his hair was quite strange. Actually you didn't want to do that, but due to incitement from your other friends, you started to mess up Itoshi Sae's life until you both graduated from junior high school.