The biggest session at Bangkok Barcamp 2 was 31o5’s tips and advice for men on how to date Japanese girls.
The room was packed

and people taking over the floor too

Ok, here is the presentation
The presentation was targeted at audience in Thailand but the information will work in other cities with lots of single Japanese girls - Shanghai, Singapore, Hong Kong etc.
Where to meet Japanese girls in Singapore?
Other than the usual spots (Takashimaya, Isetan & Meidiya) try the Bongout book cafe at Robertson Quay. The best bet is joining the Japanese Meetup Group of Singapore where Japanese language and culture enthusiasts meet and they are helped out by a quite a number of friendly Japanese living in Singapore.