Neko-nin exHeart 18+ Patch (English) [Uncensored]
“We have come from the Fuuma Village to fulfill an ancient contract. To serve you! Nin” These cats approached our hero with their loving aura in full bloom. Their adorableness and will causes our hero to be taken by them. But how will he support them? How on earth do you use ninja in this day and age? As he ponders this question, the sense of being a master begins to sprout in our hero when he interacts with these lovely cats.

This is adult patched version. Does not require installation.
Just start nekonin.exe and enjoy. Walkthrough included.

Original Title: 猫忍えくすはーと (Japanese)