I don’t remember this anime name

I can't remember the name of this anime. I watched it when I was 4 years old and I only have a vague memory of it. I don't even remember the plot. The only thing that comes to mind is a scene where the protagonist is launched into the air and lands in a spring on the breasts of a pink-haired woman? I don't know, I don't remember anything. I think there was a half-snake woman who had a snake's tail? I don't know if I'm confusing different series.