And then Nezumi would definitely argue that no, he can't keep the cat, it'll just eat his pet mice. And Shion can't shelter it in at work because there's no space left and the animal shelters are closed already. And he can't take it home either because maybe Karan is allergic xD And so Nezumi gets stuck with a cat, threatening the poor thing that if it as much as looks at his mice it's gonna get a collar and a leash (or something similar).
God, I'm growing fond of this AU well too fast ^^"