No update for a while ... I released The Isolated Zone :Shinku Chitai 12 (Japanese Edition) at the end of January. So, it's free campaign time as usual.
In this time, I set vol. 10 and vol.11 of The Isolated Zone free. All Japanese editions, but since it is free, as I say always, so why don't you DL? If you'll have English edition, comparing the 2 editions is mighty interesting. I don't know when new English edition will be released. ><;(Vol.4 is the latest)