Or a lack thereof. There are only two I know of with English subtitles:
The first is distributed by Olive Films (USA) and the second, Guilty of Romace, by CN Entertainment (HK).
It's a shame Sono's films aren't making their way to US audiences. With so many Japanese titles of lesser quality being churned out by USA distributors, the big question is why aren't titles like Suicide Club, Strange Circus, and Cold Fish being released on Blu-ray in the US?