Surprisingly, I was appointed as the one-day boyfriend of an extremely cute female colleague! ! Apparently, her parents are putting a lot of pressure on her to get married soon and return to her parents' house, and since she doesn't have any intention of getting married yet, she has no choice but to introduce me, her boyfriend for a day, to her parents... However, her parents wonder if they are really dating. Unplanned mixed bathing and co-sleeping! ! We have to pretend we're lovers in front of our parents, so we start showing off more than necessary by flirting with each other...