Knowledge on Jusenkyo itself.

Jusenkyö – The Cursed Springs

Facts (as close as you can get to facts while talking about a fictional universe)

1. The Chinese name for Jusenkyö is Chöchuanshan

2. Jusenkyö is located in the Bayankala mountain range, south of Mount Kensei, in Qinghai Province, China

3. Jusenkyö is at the very least 4000 years old since that is the age of the Ashura spring and most probably much older.

4. The water comes from a mountain called Jusendo.

5. Unknown amount of springs but there are a lot.

6. Many people have drowned in the springs.

7. The spring gains an imprint of the person/thing which drowned in it.

8. People who fall in the springs are cursed to changed in someway; Usually physically but some do effect the mind.

9. Cold water activates the Curse, Hot water restores you to your natural self.

10. Unknown temperature needed to revert back to uncursed state but is higher than body temperature.

11. Very little water is needed to cause the transformation though it is more than a few drops.

12. Water can effect descendants of cursed person to some degree (as shown by Musk and Phoenix people).

13. Transformation is fast and painless.

14. Cursed forms age unless specifically stated to be at an age. We know this because Taro did grow up and Ranma's breasts got bigger. The boy spring will likely keep you young since the name of the spring is boy.

Spring Name	Effect	Beings Cursed	Age of Spring	Other
Nyannichuan	Young Girl	Ranma, Herb, Monkey	1500
Shonmaoniichuan	Panda	Genma	2000
Heituenniichuan	Piglet	Ryoga	1200
Maoniichuan	Cat	Shampoo	1800
Yaazuniichuan	Duck	Mousse	1300
Niuhoomanmaoren-niichuan	Yeti riding a Bull holding a Crane and Eel	Pantyhose Taro	1300
Xiaochiniichuan	Boy (child)	Lukkosai	Unknown	Age Change
Ashuraniichuan	Ashura	Rouge	4000	Personality Change
Shuanshontsu-niichuan	Twins	A Bird	Unknown
Shannannichuan	Virtuous-Man	N/A	1200	Personality Change
Chanyuiniichuan	Octopus	Pantyhose Taro add-on to existing curse	2500
Akaneniichuan	Akane	Kima	Less than 1	Was created by the Phoenix people and maybe different than normal springs
Nannichuan	Man	A dog given temporary version	Unknown
Unknown	Frog	A few crows	Unknown

Inferred or my opinion

1. Curses change you in away so that you look like you would had you been born that way, i.e. Ranma looks like a female version of himself rather than looking like the girl who drowned.

2. Not every person or thing can actually get to the springs. If they could there would be a lot more cursed people/things.

3. The springs do not effect insects and inanimate objects.

4. Possible that the pools are Semi-sentient or have a being of power guiding them and choose who gets cursed though a person determined or powerful enough maybe able to get to them anyways. This opinion can be slightly backed in that the curses seem to reflect the persons personality to a degree.

5. Possible that the pools protect themselves.

6. Curse make the cursed person a water magnet.

7. Curses mix unless body is fully covered with the water. Another possibility if sprayed with cursed water while in cursed form they mix, if sprayed in uncursed form new curse takes over (Unclear what form Taro was in or how much water was used because we learned about it second hand from the guide and it's possible he told it wrong). This is partially supported by the fact that a small splash of drown twin water only doubled the part of the body Happosai got hit by the water.

8. Possible that a person can learn a way to master the curse.

9. The springs some time in the distant past were routed by the Phoenix people to run through the phoenix tap and dragon tap (both of which are incredibly strong - Ryoga couldn't scratch them no matter how hard he tried).