More information would be nice indeed. It's hard to find information on them, especially since most of it is in Japanese.

But the registrar is clearly named anonymousspeech.com, which should have been more then clear that it's a register used to hide private data, hardly suspicious by itself ( I use them for businesses as well ). Not really impressed by all the other accusations to be honest.

The main problem is that they are Japanese, so doing research on them is hard. Did you bother to contact the event and find out if they are actually a sponsor? If they say no, then that would be a big thing. edit: They are now mentioned as a sponsor http://blockchainapac.fintecnet.com/.

They should definitely make a video or so introducing themselves or so, or share links with their background on it ( that already existed before the ICO ). I would like to invest in something like this, but I prefer the money to not go down in a black hole.