Yugatsu is a Japanese restaurant in the basement directly in front of the Yongfilm building in Seongsu, Seoul, serving hirekatsu and tonkatsu. The hirekatsu is tender, and the sweet potato cheese donkatsu has a lot of cheese and a chewy texture. On weekends, customers write down their name, the number of people in their party, and the menu they plan to order in the basement in advance to be guided in turn. The space is small, so the wait is long.