Digital Tattoo

One day, a popular YouTuber called Taiga visits ex-prosecutor Iwai after being attacked on the subway station following a death threat. Iwai, who was asked to identify the person behind death threat, discovered that Taiga is the son of a politician who he had been previously investigated for corruption. Who is targeting Taiga? Is it true that once your information is posted online, you are branded with digital tattoo and you can never start over? Iwai, an analog person, wants to change that for his clients.