Hi, I am looking for a old BSB fanfic I read a long time ago. It was novel length and with a sequel. It was mainly about Brian but also focused on the group. It had time travel, and Brian had a son. In the future Brian had died in an attack, and he is somehow in the future and helps the boys in their war. Also the boys kept something from Brian in the future, but he learned about it and then ended up having to go home.