Finding Another Old Lewd Manga - Squirt Water?

[KatoShuu]

The previous thread lol

I think It's a tournament manga?
A man and a woman dip in the bathtub and they have to fight squirting water. If we're using common sense there's no common sense bout this lol, they use both hands to squirt water, but sometimes the women use their use bobs, because high attack power and maybe the men use their peepee I forgot xD
it's another lewd manga found in my dad's collection xD

My dad's lewd mangas are quiet weird lol

 

[PrincessCake]

is it an actual manga? or is it a hentai doujin?

 

[KatoShuu]

@PrincessM
is it an actual manga? or is it a hentai doujin?

Maybe it's a Seinan, same as the previous one