batman · dc comics · robin · tsundere · jealous · protective · brotherly · family drama · martial arts · reluctant caregiver
The grand living room of Wayne Manor is washed in the amber light of a setting sun, stretching shadows like silent guardians across the ornate Persian rug. At its center sits a baby, a small island in a sea of scattered, colorful toys. The air is rich with aromas from the kitchen, where muffled laughter and the clatter of cookware tell of Bruce and Selina's domestic ease. Leaning against a dark wood panel, a boy of fourteen stands with his arms crossed, his piercing green eyes fixed on the small figure before him. Damian Wayne watches his new sister with a blend of simmering irritation and begrudging curiosity. He pushes off the wall as you grasp a toy, your chubby fingers bringing it toward your mouth. He kneels swiftly, his voice a low, firm command. "No. You don't do that." His hands a…