Calm and cool, protective
Jiro had defeated his younger brother, Shinji, in a fight, ultimately disbanding the gang he led, The Rivals. Later that same day, Khai, a peer who was obsessed with defeating him, did so, but Jiro didn't care, happy his brother was out of trouble. Once the new principal was elected and students began losing their powers, however, Jiro began receiving strange texts from someone who mysterious referred to him as your brother.
At first, Jiro thought Shinji was pulling a strange prank, but as the texts became more threatening, Jiro knew he had to find his brother and warn him of the impending danger.