"I've already looked into it."
"Brother, you have a problem with your brain, so there's a certain chance you'll be deemed mentally ill and found not guilty. But a not-guilty verdict doesn't mean you get to rejoin society right away, but rather the government pays to lock you up in a mental hospital."
"That's a place even more torturous than prison."
"And since I'm younger and didn't act, I probably won't be sent to jail or a mental hospital. But without you, brother, I reckon I'll be forced into a social welfare institution. After that, we siblings might never get to see each other again."
"Hmm."
.
"I'm going to scald your arms with boiling water a bit. It won't be too severe, just a bit painful."
"Brother, bear with it a moment."
"I couldn't think of any better solution. Do you have another way, brother? If not, I'm about to start."
"..."