How to play Renai, Karichaimashita on Mac

Because of his family's unique circumstances, the only thing Yuki put his faith in was that "Money will make my little sister happy." To this end, he regularly worked a part-time job until late at night. His goals were to graduate as soon as possible and get a full-time job. But, one day as he was leaving for work, his little sister told him, "If Yuki isn't going to college then I won't either." He knew he couldn't put such a burden upon his little sister. So, in order to gather the necessary sum of money to enter university, Yuki signed up for a "human employment rental" website. It seemed extremely suspicious, but desperate times call for desperate measures. He starts his new job...and for some reason, a girl in his class asks him to be her pretend boyfriend. Then he's hired to pretend to be a woman's lover, another girl's friend, and even the older brother to a pair of twins! The details of his fake relationships with these girls begin as soon as he takes their money!