This is an alternate story which cancels out everything happening in the manga after the three-legged obstacle race in Volume #14. Like the header says, this is The Fic That Started At Atami. Ukyo and Ryoga find themselves on the beach at Atami, Ukyo trying to lift Ryoga's spirits, but also wondering if she should tell him that Akane loves Ranma (which she knows about in this universe) or not.
       When Ryoga finally returns from Atami almost a year after Ukyo went back again, he returns to a changed Nerima; Shampoo and Gosunkugi have gone into business together, Happosai and Cologne are married, Mousse is missing, and Kodachi is on Prozac! Ukyo blurts out Ryoga's feelings for Akane in a desperate attempt at driving Ranma and Akane apart...what's gonna happen?
At the bottom of the page, you'll find the last page of Volume #14.

Ninnik Nishukan

PART ONE
Ryoga comes home...trouble ensues. Also, a determined Mousse returns.

PART TWO
Date preparations for Ryoga...and enter Kodachi!

PART THREE
Akane's attitude has changed oddly after the date...and Mousse has went to China!

PART FOUR
Ukyo finds out how to prove that the fire between Akane and Ranma has been put out.

PART FIVE
Big argument between Ryoga and Ukyo. Too bad it's time for the double date!

INTERLUDE: In The Bath
After a long night, it's nice to take a long warm bath in the morning...

PART SIX
Ukyo's puzzled; why is Ryoga acting so weird all of a sudden? And Ranma too? And Shampoo is kidnapped!

PART SEVEN
Drunkenness, awkwardness, violence and great revelations! Ryoga and Ranma fight!

PART EIGHT
It's all coming down, but who is it going to hurt? And now Shampoo wakes up to see her kidnapper...

PART NINE
When the pieces finally fall into place, it doesn't take long before they scatter horribly.

PART TEN
Ukyo Kuonji is determined; she is going to learn the art of Ai Fu!

PART ELEVEN
To have sex or not to have sex, that's the question...

PART TWELVE
Things are finally settling down, but guess who's coming for dinner? Ryoga is nervous!

PART THIRTEEN
Concerning Mu Shu And Xian Pu. An unlucky number?