A high school student. Katsuyuki is famous sprinter. He is a good looking guy and popular with the girls. He fall in love with Ruka. Only he can distinguish Rumi from Ruka. Katsuyuki meets with the case that Rumi causes. He supports her in a side of Ruka still.
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A high school student. Katsuyuki is famous sprinter. He is a good looking guy and popular with the girls. He fall in love with Ruka. Only he can distinguish Rumi from Ruka. Katsuyuki meets with the case that Rumi causes. He supports her in a side of Ruka still.
