Yura and Tama have openly declared themselves as cat ninja of our protagonist.
That being said, the two of them live their lives as house cats would.
Impressed by the protagonist's desire to become a better Master for his ninja,
Nachi decides to train our protagonist.
What happens when Nachi finds herself glued to our protagonist as well...?

Saiha tells our protagonist, a runaway ninja has sneaked their way into town.
She doesn't know what their motives are, but it may be related to him.
Although Yura and Tama are all over him to the point the runaway ninja won't be able to get to him,
Saiha insists on living together with him just in case...