"What's the greatest happiness one can know in love?" For Yutaka, there is only one answer: sex. To him, happiness and lust are the same thing. The likeable and respectable heir to the wealthy Fujiwara family is being torn apart by repressed physical desires. When Tohno, a transfer student, arrives at school, Yutaka sees him as the "toy" that will make real all his desires and debauched fantasies. A lifelong friendship based on trust and gratitude hangs in the balance, but will it be shattered when Tohno learns the truth about Yutaka's obsession?