Shinji had a childhood friend, Sae, whom he had promised to marry.However, he has become the heir to the Ichijo Zaibatsu, and in order to marry Sae, he must bring a woman to climax and find a woman with a flower birthmark on the nape of her neck. did not become. Nurse Saara Takaoka is sexually aroused by injections. Misaki Mizuno, who works part-time at her girlfriend's coffee shop while also continuing her secret part-time job... Where will Shinji end up leading many women to climax...? ?