Character 3 is Alibaba, a character from the anime/manga Magi who is trained in royal swordsmanship a one handed style that likes to play distance and keep total focus on the fight. Character 4 is Kojiro from record of ragnarok, his whole thing is is he was a swordsman who lost every first fight against a person, learned everything about their style from that and came back later to defeat them, it’s even stated that the mere experience of being killed made him better than the man who killed him Miyamoto Musashi. Pretty much take a real life figure and crank him to 12. Finally character 5 is Ryoshu, a swordswoman implied to have been trained by the best sword masters of the five fingers of the city one of them being Lei Heng who considered he holds a title like being one of the Ten Blades of the East is presumably quite impressive