In the past, Tsutsui had similar proportions to a girl, for which he was constantly bullied by his classmates, hence he became a truant.
After shutting himself indoors he came to realize he was "lacking power" and got a muscle band.
Due to all the misunderstood rumors, some delinquents, that had come to take revenge on Akane, recognized Handa and fled, hence Akane Tsutsui became Handa's SP "Security Police/ Security Personnel".