Well, Reimu did seem like a cat person to me.
Even if Rin isn't the typical cat you get in a box on the side of the road.

Oh, one thing.
The title should translate to "Let's raise a cat". Just saying, because "Neko wo Kaou" is literally how you pronounce 「猫を飼おう」.

Ohh! That cover pic of Reimu smiling cutely at Orin while she sleeps! Aww ^^

Quite the rare ship. Would be nice if there were more content