He must have been related to my Hana. She loved water, too. I've had two that would join people in the shower, too. Hearing that screech (from the unsuspecting houseguest, not the cat) was SO worth three days of glowering! The cat was totally unfazed.This is so true. I ended up leaving the door partway open.
I had one cat that would get in the tub with me and lay on my submerged stomach. I guess he didn't get the cats don't like water memo.