Succubus Family – The Semen-Draining Contract and the Boy Who Was Taken In

One day, my parents suddenly disappeared, leaving me all alone. - The one who welcomed me into her home was Yuri, the neighbor I had long admired. - However, this house held a certain secret. - The family living here were actually succubi who drained semen from humans! - According to the rules of the succubus world, in order to truly become part of their family, I had to make a special “contract.” - But every one of its conditions was filled with lewd demands…!?​