A high school student, Katsuyuki is a famous sprinter. He is a good looking guy, and popular with the girls. He falls in love with Ruka. Only he can always distinguish Rumi from Ruka. Katsuyuki faces many horrors because of Rumi's actions, but he supports Ruka no matter how much Rumi hurts them.
Katsuyuki Touma
当麻克之
Umi no Yami, Tsuki no Kage
