Kensei

Kensei, also known as Sword Saints, are swordsmen of "legendary" skill.

Overview
Kensei is a term for swordsmen that are capable of fighting knight-level opponents even without the usage of chi.

Known Kensei
Kensei who may fight knights without the usage of chi:
 * Tenshi Keramat
 * Ignis Natus
 * Robin Goodfellow
 * Allen Lai (haino)

Kensei who may fight paladins without the usage of chi:
 * Taryn Keramat
 * Vergil Natus
 * Ryōra Drachen
 * Kashi Koi