College student with a love for big boobies.
He is spotted by high schooler Reina Toyohara and it was love at first sight. He was only aware of her presence when she asks him to be her tutor through his friend Yoshio.
His in-decision in choosing between Reina and Mitsuki causes the two heroines to compete for his attention.

In the game this series is based on - he later marries Mitsuki Toyohara.

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