There are some things that are interesting and funny:
Japanese men obsession of school girls with big boobs

They like their potties. When I first came to Japan in the late 80s,
the japanese toilets were a trough in the floor, especially difficult to use on the bullet train, the Shinkansen.

Now toilets have gone hi tech, they wash the front area for women.

It washes the backside and dries it.

it has music so no one can hear the tinkle.

Now its posted on the door the type of the toilet.

Even hospitals have thee hi tech toilets, but sometimes difficult to find a place to wash your hands.

The trains:

We are so spoiled, just walk to our garage, get in your car and go wherever you want. In Japan, there are not so many freeways, traffic is terrible, so to get around, you must ride the trains. climb mountain of steps, and rush hour is just plan scary.

The beer in vending machines:

The masks: The idea is that if you have an upper respiratory infection, and in close area like the train, you wear a mask to prevent transmitting the infection. However, that only works if the mask is dry, when it gets wet from respiration, it does not a barrier. The Japanese put them on, wear all day, even outside. There must be another reason?