The older brothers and the Younger sister

the older brothers who had their little sister taken away from them finds her again after years.. but she's been through some things, will she tell them or keep it a secret? but.. the brothers have secrets as well. What happens when two of the brothers have some mental health problems as well, Leo the oldest brother being nice but overwhelms himself in work. Ethan, The strict second oldest brother. He has anger issues, it's hard to control for him. He becomes angry easily. Xavier, The third oldest brother. The cold one, The one who blocks out his emotion. He is scared of being hurt again, he was hurt so much when Calla left. Mateo, The fourth oldest brother. The funny one, yet.. blames himself for everything.