Koisuru ryu no shima (H&C Comics ihr HertZ Series)

[Machine Translation] After graduating from high school, Nijino was busy working part-time to pay for his younger sister's medical bills when "fate" appeared before him. He was abducted by Byakuya, a tall, white-haired man with an overwhelming sense of intimidation (he is said to be a legendary dragon that has lived since ancient times), and in the blink of an eye, he was stripped of his clothes and had sex with a man to the point of losing consciousness. Nijino was taken in by Byakuya on the condition that he would pay for his sister's medical treatment, but his rebellious spirit continues to grow. However, his heart flutters at the sight of Byakuya, who is usually cold to him, but only during sex, he is so absorbed in her that he sees nothing but Nijino...?

高校を卒業し妹の治療費のためバイトに明け暮れていた虹野の前に、「運命」が現れた。白髪長身圧倒的威圧感をもつ男・白夜──(太古の昔から生きている伝説の竜らしい)に拉致され、アっ…という間に服を剥かれ意識を飛ばすほどのSEXをしていた。妹の治療費を条件に白夜に囲われることになった虹野だが、反発心はふくらむ一方。しかし、普段は冷たいくせにSEXのときだけ虹野しか見えていないぐらい貪るように夢中になる白夜に胸がときめ・・・?!