Despite my preference of Groups over forums, I want to inform ya all that it sometimes helps to actually post on another thread of a different timeline, as long as you respect that your location on this story line will not cause any conflict.
So, simply speaking, you can safely post on Feb's newly created one and still update your current one with Saya and the gang. A lot could have happened for two months after the first day. And more likely, anything small in the past won't prolly affect much in the new setting.
Just don't put in the new thread that Nanashi and Morikawa-sensei are now dating together.
