Men and women are sitting nervously at tables hoping to find that special someone.
The room is brightly painted in red and white, the staff upbeat and enthusiastic, but the conversations are rather stilted.
"My image is of someone who is down to earth, something like that." 'Burahara'Interest in blood type is widespread in Japan, particularly which combinations are best for romance.
Women's magazines run scores of articles on the subject, which has also inspired best-selling self-help books.
People in most parts of the world do not think about their blood group much, unless they have an operation or an accident and need a transfusion.