Bob Headed Girls and the Rich Boys Who Love Them

[Urusei Yatsura x Ranma 1/2]
Finally, no Lum, no Ataru. Not even Ranma or Akane. Shinobu and Nabiki mysteriously receive a pamphlet in the mail describing a place for girls like them to go if they wished to fix their relationship with their wealthier other halves.

Seems very sketchy, but that's not going to stop them! It's summer vacation, what can it hurt?