Run Away With Me, Ranma!

Ranma experiences a recurring nightmare about encountering an old man named Harumaki in a field of blooming cherry blossoms, who has induced an out-of-body experience to search for his love interest Gyoko, to which Ranma in female form takes quite a resemblance. Ranma soon gets roped into dating Harumaki, in honor of his last dying wish before shuffling off this mortal coil.