Yosoku Seongsu is a Japanese home-style restaurant near Seoul Forest and Ttukseom Station in Seongsu, Seoul, serving donkatsu and soba. The donkatsu has a thin, crisp coating over tender meat, and the soba comes with chewy noodles in a light broth. The restaurant is on the second floor. At lunch or around 6 p.m. on weekdays a wait of about 15 minutes can form.