Seems like it's kind of hit or miss on the kits. I'll come prepared with my own stuff. I'll be through there in a couple days, love to shower before connecting on for BKK or wherever. I also usually forego any food in the lounge except for the auto beer machine
and head straight for that little sushi shop. It's nothing crazy special for Tokyo, but compared to most of what I eat in USA it's quite delicious!