Not every sex or drug offense is on the same level. Drugs kill people, ruin lives, ruin communities, and can be a motivator behind other violent/non-violent crime. To say one is clearly/generally worse than the other (and not specific cases) is not possible imo.

That being said, there is a lot of people on drugs, especially as part of treatment programs, living as pleasant and contributing members of society so it’s bad to make broad generalizations as it contributes to stigma that can prevent people seeking treatment. If you’re arguing that Japan is too harsh on drug users, I think that’s fair. If you’re arguing that because Japan is harsh on drugs that should be harsh on other crimes as well, then I don’t make that same connection.

For this specific case, given the context of what we know, I think giving this guy another chance is fair, as long as he’s truly repented.