It's seven years after Akane has passed away prematurely, and Ranma is left alone to raise four daughters and to deal with a curse that's causing his emotions to skew.
On a spring day Ryouga is wandering when he meets up accidentally with Ranma. An older Ranma now, the years have passed, and they've not been kind to him. Akane passed away 7 years ago, and there's been a hole in his life ever since. At least he has his four daughters around him. That curse is acting up as well, and Ranma today seems to be quite a lot different from his old self...