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