BTW, some weeks ago, my brother asked me what would happen if you mixed the
water from two cursed ponds and then threw someone into the mix?

Something like Pansuto Tarou.

But Pansuto Tarou's form was made from those animals drowning together,
not from mixing water. And then he was splashed with water from Spring
of Drowned Octopus, so had some tentacles later. So, if you aren't
completely covered in Jyusenkyou water, only part of you changes...

Kun-chan...