so, been having an idea for a setting twist, kind of. It'd be running from roughly the current time in FFG setting: Daisetsu becomes the heir/emperor child, Shoju as his regent. Sotorii stays as crown prince, practically.
Everyone at the higher level is worried about the potential civil war... until someone, somehow gets the idea into their mind, to provide a huge distraction: A war of expansion into the Yobanjin lands. Sotorii manages to get approval to take part in the campaign, the main force will be made up of the Imperial Legions, and Toturi joins him.
Besides the Imperial legions, the Dragon, Badger and Lion step up to provide the main force, with the Shiba and Kosori from the Phoenix also helping out.
Toturi needs to leave someone as his voice as champion, most probably.
It's not a perfect idea so far, as the Unicorn-Lion war would need to stop... or maybe get to an uncomfortable ceasefire. Some kind of Yobanjin raid to start it off might also be needed for narrative sense.