Japanese Restaurants Abroad Taste Pretty Much Like School Cafeteria Lunches/Once You've Taken a Dish, You Can't Put It Back Gintama : Season 1 Episode 120

Katsura infiltrates into an alien restaurant that discriminate against people of the Earth. / Madao becomes a temporary manager of the conveyor belt sushi restaurant, however, he asks Yorozuya to help because he cannot make sushi.