Judge's Livestream: I Judge Good and Evil with Thunder

Reborn after being murdered for investigating organized crime, the protagonist was once a top law student. After coming back to life, they awaken the Heaven's Punishment System and become the Judge, using livestreams to punish abusers whom the law cannot bring to justice. To the outside world, they are an ordinary college student. In reality, they are an expert in criminal investigation, counter-surveillance, and psychological profiling, cool-headed and ruthless, and a firm believer that evil must be punished on the spot.