Strong's a word...( This feels like a trick question. Is Ryouma strong? Of course! He was a master swordsman, after all! ) But he was more like a visionary. He saw things like no one else could see and went on to change Japan as much as Nobunaga did. Yeah, he was a master swordsman but no one remembers him 'cause of his fights! In fact, he didn't even like fighting! It was all about using his words to bring people up and together.
1/2
( Uuuu, he's practically sparkling )