The Joro-gumo yokai, is located on the Spider Nest Castle Mission of the game. In Japanese Folk Lore it is said that when a spider reaches 400 years of age it gains strong magical powers and hungers for human males. Cunning and dispassionate, the spider shapeshifts into a young and beautiful woman who uses her sensuality to lure young men to feed upon. The strategy for this Boss is to attack her from the back or just to the side, but not the front. Be sure to dodge her twirl AoE attack that can catch you by surprise if you aren’t careful. Keep this pattern up until she is lower on health at which point she becomes signifcantly more deadly and more agressive. However, the strategy remains the same, only now with a bit more dodging than before. .
As found on Youtube