"So-called loss of control refers to a state similar to a virus-like spread, affecting some mysterious object and leading to a state of disorder,"
"For these mysterious objects, if you meet their infiltration criteria, you will enter their chaotic rhythm and, eventually, be assimilated by the disorder."
In short, a mysterious object that has lost control is akin to a peculiar and terrifying disaster.
Once a person falls into it, it's as if you're contending against an intractable disaster.
Angel listened to this but was still somewhat confused, "Then, your task, sir, is to fight against the disaster and conquer it?"
Frost nodded, and then shook his head, "It's not that simple. Let me give you an example instead."
"Do you know why I came to Black Castle?" Frost seemed to ask a question, but he didn't actually expect Angel to respond. He continued along the same line of questioning, "The reason, in fact, begins with a mysterious object that has lost control."