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"Hurry up and ask me to kiss you one more time!" The pitiful lamb, Kusakabe was forcefully brought to the home of the school's most reputably notorious delinquent, Hayasaka-senpai. Just when it seemed like he's going to become the wolf's dinner ? unexpectedly the senpai ask Kusakabe to teach him maths. In the time shared under sunsets, Kusakabe saw another side of senpai that does not seem to fit into the rumours and felt that senpai is actually very gentle...? Just when he lets down his guard, Kusakabe is suddenly pushed down and under the caresses of his senpai, he gradually writhes in pleasure?! The love story of a seductively cute young boy's heart in blossoming spring is going to start.
Sold by his parents to a brothel, Yuki is placed under the care of the mysterious Shirogane. Shirogane, who is known for his skill at training young boys to satisfy customers with their bodies, pleasures Yuki every night and introduces him to the debaucherous world of carnal pleasure. But on the night Shirogane declares Yuki ready to receive customers, Yuki cries "I only want Shirogane... please go all the way...!"