[Weapons and Suits of Armor? Naoto was reminded of Sentai shows and Kamen Raider from her world, but this gentleman was almost painfully American; so that was unlikely.

If he was that deeply involved, he must have made a fortune as a weapons manufacturer, but changed his mind and moved onto more defensive oriented inventions. And if she hadn't already noticed the nature of the people coming to this world...]

...So what you're saying is, you're a genius with technology, most likely extremely wealthy and now work as a Super Hero due to your life altering experience. Is that what you're getting at?