Just as in his original world, the magic here was considered a fancy tale or a scary, unknown thing. He was far from powerful enough to ignore the opinions of others yet, and openly doing magic would invite unwanted scrutiny upon himself. He had thought long and hard about explaining his magical armour and weapons, but he realised he didn't have to say anything. Questions might be asked, but he would keep silent unless asked directly. He did not owe anyone anything anymore. Others would form their own opinions or explanations.