Stone War AU
Something tragic happens like he either gets to far from the village or they kick him out or death but Senku is no longer has anyone to help him, so, now injured and sick, Senku has to make his way to the Tsukasa empire as his only chance of surviving the winter. He almost gets there but collapses somewhere near his grave and Ukyo brings him the rest of the way. Tsukasa see his enemy incredibly sick and on the verge of death and is reminded of his sister. Gen (who was not found out to be a traitor in this au) manages to convince Tsukasa not to kill Senku, and now Senku is the Tsukasa empires prisoner.
However soon, spring comes around finally and Chromo and Kohaku try to find where Senku is, with only a few hits from Gen as guidance.
