Men and women who work part-time at a job are lured by the reward and can't hold back until the morning and end up having raw sex and cumming inside

Male and female part-time coworkers (Narita Tsumugi, Kanon Urara, Shiki Akane, Shirase Yukiho) are picked up and in a project to see if they can hold off on sex until the morning, they can\'t hold back and end up having raw sex and creampieing each other!