Ranma ½ Part 6 number 4

An interesting thing about the cover is that Ranma-chan's hair is the wrong color. It should be red since the cover is in color. A mistake by someone.

The insane principal has set up a challenge for the students as they are trying to find a hidden coconut. They all end up in a replica of part of Hawaii. Ranma-chan finds the principal and tells him a fake story, but the principal is so crazy he's forgotten where he hid the coconut and promises her he'll help her find it.

It's revealed that the principal had forced Kuno, his son, to get a ultra,ultra close haircut and Kuno has never forgiven him. Kuno meets his father and things don't go well. It turns out Kuno has the map to the hidden coconut on him, literally.