Leather sofa seats, Mod bubble lights, elderly patrons smoking at the bar, and thick slices of pizza toast: These are the elements of a typical Japanese kissaten, or kissa coffee shop. Part bar, part restaurant, and part community center, these humble, Shōwa-era cafés serve tea, coffee, alcohol, and delightfully hybrid dishes such as pizza toast. Made of inch and a half thick slices of white bread topped with tomato sauce or ketchup, processed cheese, and whatever toppings the chef has on hand, this goey, crunchy comfort food is what American…