A super cute girl in my class doesn't have any desire to get married, but her parents seem to be putting a lot of pressure on her to get married soon. So, in order to reassure my parents, they asked me to act as her boyfriend for just one day. However, even though it's just to make them believe that they end up taking a bath together and sleeping together on the same futon, they end up showing off their flirtations like a real couple...