It's dangerous because of its special attack, Slay, instantly kills one target, and as a physical attack it ignores immunity to Death attacks. They have a chance to use Slay every other turn and can make short work of the party.
If the party has acquired the Ragnaroksummon, it can be used to attempt to farm Genji Gloves from this enemy.
[view·edit·purge]Samurai were the military nobility of medieval and early-modern Japan. They were not just great swordsmen, but also powerful horse archers and martial artists of other fields. Though their status was that above commoners, samurai were bound to forms of etiquette and a way of life known as Bushido, stressing honor to one's devoted and preparing oneself in the face of death.