cat and mouse || ririka × female reader

"What a dastardly plan." You casually comment, as that little brat comes to your play place to ruin it up again.

You are Y/N, or rather, "Mari" Jabami, the adopted sister that's fit just in the middle, the murky shadow of the family. Just as you were enjoying your school life, your little sister with a gambling addiction comes up to make you clean up for her again.

You should've known not to choose this school. It was so painfully obvious that she was going to barge in here sooner or later. But nooo, one Jabami wasn't enough for the allegiance.

But oh well, you resign yourself to the life of being that troublesome kid's babysitter. At least you found that little cutie.

The white mouse in the grasps of a black cat.