@caseo78 I doubt she'll end up as one of his rabbits, sadly. Going by her pampered appearence, I'm thinking his female coworker finds her, and somehow spoils her through the moon rabbit work-centered instinct, kinda like Mashiro but spoiled.
Me personally though, I'm hoping him and Mashiro get on better terms, and she moves in as well. (The rabbit Fuwami and Mofuko call Master, the one living under a bridge collecting trash)