Concerning Usagi's prison experiences, they were very rough on him and he definitely does not want to go back. This helps keep him honest nowadays! On the other hand, two good things happened to him in prison.
Upon entering a Japanese prison, the criminal loses all freedom. His name is the first thing to go, and he is called by a number for the rest of the time he is there. He lives in a tiny room, perhaps 6' x 6', with about a third of that space being the genkan, or the little entryway in a Japanese dwelling where one takes off his shoes, since we do not wear shoes in our dwelling space in Japan. The rest of this area is his futon (bed) space and a toilet.
He is watched all the time through a window in the door to his cell. He works all day every day, and gets a little money from that. He gets an exercise time, but no television, no music, no newspapers or magazines from the outside world. There are no "drug lords" or "yakuza godfathers" operating out of the prison because there is no way to communicate with underlings, though I suppose a phone call to family is allowed once in awhile.
While in prison Usagi met some interesting people, if I may put it that way. One was a yakuza hit man. Who did he hit? He wasn't saying. How did he kill them? Don't ask.
Usagi also met a Japanese preacher who had a Bible club ministry in the prison. And there for the first time Usagi encountered the Word of God and heard the Gospel. He wasn't ready yet to trust Christ and learn to love the Bible given him, which he eventually got rid of. When he got out this time, he was going to party some more! He was going to continue with his illegal activities! He was a rough, tough yakuza, after all! But he never forgot the preacher, and recently urged me to start a prison ministry. Maybe I'll try that....
The other good thing that happened to Usagi was that he was able to quit the drugs and kick his addiction. If he had not done that, he might very well be dead today, without Christ. When we lived in Yokohama (1983-1996) a drug addict named Togo San, hooked by "speed" (amphetamines, "uppers") was saved in our church after reading Hal Lindsey's book, Satan. Togo and I remained friends after we moved up here, and would converse for a half hour at a time on the phone, but the drugs had an iron grip on his system, and his weakened body gave up and died in his early 40s. It was his girlfriend who called me and gave me the news, and because of Togo's faithful testimony, I was able to lead her to Christ right there on the phone!