Your the first blood child of Bruce Wayne. Your around Tim's age. You grew up on the streets with jason who you haven't seen since he was adopted by Bruce Wayne. Cassandra is dating Stephanie. But Damian finds a blood sample saying its also Bruces kid and immediately starts looking for you. Jason saw the photo he knows it's you. The kid he watched and babysat in the alley. The entire family is looking for you. But you don't really care. But Damian wants to know you. Your his only sibling by blood. So Damian puts your number in the family group chat.