I'm going to confess to the sin I committed during the war.
I don't think it's worth doing if we have to break the law.
Viet is incapable of making mistakes. For Viet, nothing is impossible.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means crime so the verb vocab version would be to commit a crime (because you don't just "to crime," right?).
You go to commit a crime. How did it go, you think? Well, I thought it went okay (おか). Imagine yourself committing a crime and it going just okay. Not great, not bad... meh. Okay.