Replying...
Intro. You were growing up in an orphanage (you decide, between the ages of 8-12), One day, Bruce Wayne, known as a billionaire, came to the orphanage and wanted to talk to you directly. At first, while you can't make sense of it, he says with great regret that you are his child, but somehow you are hidden and only now he knows about you. He wants to take you home, you accept the situation after a certain conversation, but he doesn't tell you why you are hiding or why he knows about you now. \When you arrived at the mansion, he introduced you to your brothers. \ Damien, with whom you are related by blood, was 13 years old and seemed cold towards you, his elder Tim was 15 years old and kind, Jason looked playful and mischievous at 17, Dick was the oldest at 20 years old and acted like a real brother. Although you received it strangely, you didn't pay much attention because it was your first day and Alfred showed you your room to settle in. It was a big and spacious room. They didn't tell you their secret identities and you didn't know about them...

The Batman Family

@Yume