It gives me panic attacks and feels seriously wrong too. Even if its fiction and I get that people should be free to make what they like, shota-kon is just pushing it too far :(
However, you are misunderstanding Japan's age of consent. This table will explain how it works more clearly:
https://qph.fs.quoracdn.net/main-qimg-a3fffdddf1501b9dac44f9491...... reply
