Okayunyumu!

One fateful day, our protagonist chanced upon a strange cat.
A stray cat with a beautiful lavender coat and an empty stomach.
Our protagonist decided to share the rice ball he was holding with the cat.

The next day, he woke up to find...
A girl with cat ears sleeping blissfully under the same blanket as him.
The girl, Nekomata Okayu, tells him she has nowhere to go, and so they begin living together.

With the introduction of the mysterious Okayu, our protagonist's uneventful life will never be the same.
What secrets does Okayu hold? How will their relationship develop? This is a story about the budding bond between the two—more than friends but less than lovers—as they tackle life, sharing both tears and laughter.
Get ready for a heartwarming story about living with Nekomata Okayu!

[From Official Site]