I knew when Batman smiled at the puppy in the box that it was a done deal! The way you crafted the batfamily slowly adopting little Ace was both cute and endearing. The line about Bruce's observations on how his son's kept their rooms was bittersweet. puppy!Ace attaching himself to Bruce, waking him by licking awake, following him around, sitting at his feet, was beyond sweet.
Thank you for sharing this puppy sweet fic dear.