Surprisingly the MC is a breath of fresh air for a dating sim. He is a very no-nonsense, practical and level headed kind of guy who lives alone with his sister and has to work part time jobs to provide for her, since they live alone . A clear cut difference from the usual angsty, faint-hearted protagonist you'd see in most japanesse dating sims, he also doesn't get flustered easily and stammers like a broken record when a girl does something daring ( again, unlike the wimpy protags in most dating sims ).
Oh and don't misunderstand, he's not a male prostitute, he gets hired to act as a boyfriend to show off, for example, there's no sexual services involved.