Things were so awkward between Kei and Kei so the last thing I would've expected is for her to request something as strange as to have her taken in as the guy's pet. She's so adorable and Kurono felt really blessed to live with a hottie he can peep on~
This is going to backfire, I can already see it a mile away, it seems her character's purpose is to cause a huge rift between Kei and Kato some point down the road ... Just wonder when that will be.