*shrug* Actually if both are post-series, then there is an easy explanation for why none of the Ranma cast responded to Jadeite's challenge. That is after all two years ago so...
You could say Ranma and Genma were not near Tokyo, Ryougo got lost on the way, Ukyou was still training against the sea, Soun prevented Akane from going, Kuno got stopped by the cops at the roadblock, the Amazons were, of course, still in China...
Really as long as you don't try to explain away the 'Endless Summer' nature of Ranma as meaning lots of time passes it isn't an issue.
It always irks me when people make Ranma 18 at then end of the series because there is nothing to support it. (Unless I'm seriously misremembering and there actually was a birthday storyline somewhere.)
Of far more showstopping nature to me is the idea of the Senshi not showing up during the Ashura/Tarou fight.
You could say Ranma and Genma were not near Tokyo, Ryougo got lost on the way, Ukyou was still training against the sea, Soun prevented Akane from going, Kuno got stopped by the cops at the roadblock, the Amazons were, of course, still in China...
Really as long as you don't try to explain away the 'Endless Summer' nature of Ranma as meaning lots of time passes it isn't an issue.
It always irks me when people make Ranma 18 at then end of the series because there is nothing to support it. (Unless I'm seriously misremembering and there actually was a birthday storyline somewhere.)
Of far more showstopping nature to me is the idea of the Senshi not showing up during the Ashura/Tarou fight.