Pachinko

The first time I've seen a Pachinko parlor fitted out with sofas for couples.
If you are traveling to Japan then I would recommend that you give it a whirl. Is a very interesting slice of Japanese culture that you can experience for 500 yen - and you never know, you could strike it rich and walk out with a wad of money - or a wad of prizes that you exchange for money to be precise - a loop hole that enables you to gamble for money.

Photo below from the previous Pachinko article which talks about what Pachinko is.