Katsudon wa Hito wo Shiawase ni Suru Ginza-ten is a small Japanese restaurant in a basement near Ginza Six in Tokyo. It serves thick tonkatsu, and the katsudon comes with crispy tonkatsu topped with moist egg and a sweet-savory house sauce over rice. There are about 11 seats, and food comes out relatively quickly. Because the space is small, walking in without a reservation leads to a wait.