I'm gonna call it, oda will make alternate oopsies that turn Shizuko and her followers into "traitor" Againt their will, while the anti shizuko factions that include akechi mitsuhide will flock into oda's banner
I'm gonna call it now as well. Akechi Mitsuhide betrays and somehow manages to "kill" Oda, Shizuko and her close friends through underhanded means. Without Shizuko, most of her inventions, teachings, way of doing things, etc. are lost. Historical records somehow gets lost or manipulated by jealous lords, so future generations never even knew Shizuko existed in feudal Japan.
Back in our time, Oda, Shizuko and her friends pop out of thin air. Instead of dying, they ended up getting teleported to the future. A few years pass, Oda somehow becomes Prime Minister of Japan and appoints Shizuko as Deputy Prime Minister of Japan against her wishes. Other friends of Shizuko like Ashimitsu also end up in positions of power such as being a Cabinet minister.