Twelve Hours To Survive

For the first time ever, Japan's government has allowed the purge to commence. All together, there have only been 3 purges so far in the UK, US and Russia. As the news had spread through the country, all high school students have been forced to hide down in Shiratorizawa Academy. But what if some students don't make it there in time, and have no other option but to survive on the joyless and murderous streets!