This reminds me of a murder incident involving a "yami baito" group in Japan. These groups recruit people to do home robberies and other crimes through social media and they're becoming more common. Tanaka's grandma and Asura's mom might have been victims of a yami baito group who we'll see get punished in the future. https://english.kyodonews.net/articles/-/51669
Curious how this is going to progress, the fact that he has to key people manually and the person being keyed can resist is a huge limitation. Maybe he’s going to unlock more hell powers as he continues to judge people?