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I can't remember this anime and it's hurting me pls help pic unrelated

No.763501 ViewReplyOriginalReport
I'm recently getting crazy over a memory of 7-8 yo me watching an anime I know nothing about...except for ONE, damned scene:

a bunch of guys start a fight in a bath tub and each one has his own penis censored by a black ball, wobbling around (suggesting the same movement for what's underneath).

While doing research I also discovered an online wiki only about anime bath scenes, which is crazy, but it didn't help much. Again, I know nothing else about this anime. Maybe it's around 2006.

Pls help now I can't get my sleep at night