The Japanese TV program "Drama A" is a popular drama broadcasted in October - December 2016. While the audience rating has been sluggish, this drama marked a high audience rating in 2016. The popularity of this drama has not been from the beginning. It has been popular from the middle and it was speculated that there is a part related to social media in its popularity. In this paper, we used mathematical models of hit phenomena to consider the influence of audience rating from social media from the perspective of social physics. By thinking together with video research's per minute viewing rate, we analyzed which timing triggered this drama by hit.