Nagisa time travel theory:
Just as nagisa gives birth to ushio we as the viewers and Okazaki are under the impression that nagisa died but in reality the government used their experimental time warp devices to stop time (which is on the path of the creation of the time machine or tpdd) the government in that time kidnap nagisa and put a dummy to replace where nagisas dead body should be. After that I forgot what happens but I think it’s something to do with Akio and then nagisa is used to experiment with time travel but it has not yet been perfected and goes back in time and then something else happens where nagisa becomes special ops and then she is released from the government and is reunited with ushio and Okazaki 5 years later. By now it is the year 2008 which is 2 years after haruhi was released and presumed to have taken place before the universe reset. Another year passes and nagisa helps to perfect time travel and she does this but then trouble strikes when nagisa and the other time travellers attempt to go back in time 4 years ago to do something I also forgot until they realise that they cannot do so. Nagisa being a high ranking member of the time travelling gamers goes back and recruits her past self to go back 3 years in the past (which is the furthest they can go back in time for an unknown reason as of yet) big nagisa tells young nagisa to go under the identity of mikuru Asahina and then haruhi happens and big nagisa sometimes checks up on them and all that shit
