As an individual, yes, but for "reporting in the public interest" truth is a defence in Japan.
That's the theory, anyway. In practice, the Japan Sumo Association won a major defamation suit against a tabloid claiming matches were being rigged, despite there being incontrovertible proof that matches were being rigged and the Sumo Association itself expelling a dozen wrestlers for their part in the scheme.
That's the theory, anyway. In practice, the Japan Sumo Association won a major defamation suit against a tabloid claiming matches were being rigged, despite there being incontrovertible proof that matches were being rigged and the Sumo Association itself expelling a dozen wrestlers for their part in the scheme.