Sota was silent after he knew who had killed his mother. He also felt a little scared of that person, and that person came back after him because they wanted to kill him.
He felt that someone had told someone else to chase him and then kill him. Sota didn't say this to his father. In other words, he only said it to Dean.
"Are you sure about what you said earlier?" Dean asked Sota again.
Dean wants to know how much the boy knows about the murder that happened to Akane. He wondered whether the trauma was from Camila's imprisonment or when Sota saw Akane's murder.
He tried to ask Sota because he wanted to know everything so he could help find Akane's killer. Because for him, Akane is his best friend besides Arda and Henri.
However, Sota didn't say anything else, and he started crying again in Dean's arms. Outside, Jasmine, who heard the sound of Sota's crying, rushed toward the child's room.