3-nin Iru! ~Happy Wedding in Livingroom~ (jap) by Riffraff - Adult Sex Game

In the midst of a recession, Atsuyuki spent every day attending university and doing part-time jobs to pay off his tuition and living expenses. Of course, he had no time to get a girlfriend nor go out with his friends. However, his part-time job suddenly disappeared and he no longer had a source of income. He was at a loss of how to accrue so much money to cover his expenses.

Returning home for a visit, his uncle recommended a live-in part-time job to him. He quickly jumped at the opportunity which offered both money and a place to live. Arriving at a fine new single house, he was greeted by three girls who introduced themselves as his wife! Just what kind of part-time job was this!? It was for researching newly-wed families, but what was he supposed to do!?