The thing that really made me fall in love with this country (aside from futuristic cities and fascinating history) were the people.
Everyone was incredibly friendly. Anytime I looked little confused, people stopped and asked if I needed help.
When I talked to a Japanese person, they were warm and very polite. Maybe this is because i'm quite reserved, polite and well mannered, unlike admittedly a fair few westerners, and maybe the Japanese I encountered appreciated this.