I had a ball in Japan in the mid 80s. (Though I don't think Dennys photos are Japanese, looks more korean maybe)
Anyway, when I was there Charlie Brown was all the rage. I found their teenage dating rituals interesting. When I was in school, the girlfriend wore the boyfriend's letterman jacket. Over there the boyfriend wore the girlfriend's shoes. Odd to say the least. I remember all the signs in english that were meaningless. My favorite bar was Wacky My Zoo - Happy Happy Fun Bar