Unless
something happens to boost Japan's birth rate, its population will
shrink by a third between now and 2060. One reason for the lack of
babies is the emergence of a new breed of Japanese men - the otaku, who
love manga, anime and computers more than sex.
Tokyo is the world's largest metropolis and home to more than
35 million people, so on the face of it, it is hard to believe there is
any kind of population problem at all.
But Akihabara, an area of the city dedicated to the manga and anime subculture provides one clue to the country's problems.
Akihabara is heaven for otaku.
They are a generation of geeks who have grown up through 20
years of economic stagnation and have chosen to tune out and immerse
themselves in their own fantasy worlds.
Kunio Kitamara, of the Japan Family Planning Association,
describes many young Japanese men as "herbivores" - passive and lacking
carnal desire.
“Start Quote
YugeI think twice about going out with a 3D woman”
It seems they no longer have the
ambition of the post-war alpha males who made Japan such an economic
powerhouse and no interest in joining a company and becoming a salary
man.
They have taken on a mole-like existence and, worryingly, withdrawn from relationships with the opposite sex.
A survey by the Ministry of Health, Labour and Welfare in
2010 found 36% of Japanese males aged 16 to 19 had no interest in sex - a
figure that had doubled in the space of two years.
I met two otaku, who believe themselves to be in relationships with virtual girlfriends.
This girlfriend is actually a Nintendo computer game called Love Plus, which comes as a small portable tablet.
Nurikan and Yuge take their girlfriends, Rinko and Ne-ne, on
actual dates to the park, and buy them cakes to celebrate their
birthdays.
"It's the kind of relationship we wish we'd had at high school," says Nurikan.
Find out more
Watch This World: No Sex Please, We're Japanese, on BBC Two at 21:00 BST on Thursday 24 October. Or catch it on the BBC iPlayer.
In the game he is a 15-year-old, though in reality he is 38.
"As long as I have time, I'll continue the relationship forever," says Yuge, who is 39.
"As she's at high school, she picks me up in the morning and
we go to school together. After school we meet at the gates and go home
together... In the game I am 17."
Yuge says he often puts Ne-ne - or the games console
containing her - into the basket of his bicycle, then he takes
photographs of them at his destination.
Though Yuge would like to meet a real woman, and Nurikan is married, they say this is easier than having a real girlfriend.
"At high school you can have relationships without having to
think about marriage," says Yuge. "With real girlfriends you have to
consider marriage. So I think twice about going out with a 3D woman."
Nurikan says he keeps Rinko a secret from his wife, and hopes he never has to choose between them.
It's hard to avoid feeling that otaku are in a perpetual
state of childhood and are quite comfortable with their lives this way.
Exactly why they have retreated into fantasy land is not obvious.
Tokyo-based social commentator Roland Kelts says many young
Japanese men are pessimistic about the future. They don't believe they
will match their parents' wealth and don't want to commit themselves to
relationships.
More from the Magazine
For Hide, the problems started when he gave up school."I started to blame myself and my parents also blamed me for not going to school. The pressure started to build up," he says.
"Then, gradually, I became afraid to go out and fearful of meeting people. And then I couldn't get out of my house."
"If you compare China or Vietnam,
most of those kids on scooters going to nightclubs, and dancing their
heart away and perhaps having sex - they know it's getting better, they
know they are probably going to rock their parents' income," he says.
"No-one in Japan feels that way."
Several surveys have shown that even when Japanese men and
women are in relationships, they have very little sex. In one survey
just 27% said they had sex every week.
Marriage rates are also plunging, and very few babies - only 2% - are born out of wedlock.
Japan's demographic timebomb is also linked to the lack of immigration.
In Britain one in eight people were born abroad, compared to
one in 60 in Japan. But immigration in Japan is still heavily
restricted, despite a dearth of some qualified workers.
In Britain there are 60,000 healthcare workers from overseas,
while in Japan - where there is a serious shortage of nurses - there
are only 60.
Japan has managed to preserve its unique culture in an
increasingly globalised world but could that very sense of identity
stand in the way of solving its population problems?
Or is it just time for Japanese men to grow up, have more sex and make more babies?
SOURCE: BBC