>>93558248Did you ever consider that "getting back to the past" could be attained in a metaphorical sense?
After killing Aku, the world absolutely could have recovered and rebuilt it's lost beauties with or without Jacks assistance.
Jack could have even rebuilt his own village to its former glory and beyond due to the technological advancements.
And just to throw you a bone if you absolutely MUST have Jack go back to the past or you won't be satisfied; Multiverse is not a hard concept to work with, just kill Aku in the future, say goodbye to everyone, and then choose (emphasis on choose, because all the weight of the consequences were lost because it wasn't a conscious sacrifice that was made) to go back, Ashi doesn't disappear, and someone makes an offhand comment that it's likely due to different timelines.