I KICKED THEY BUTTS!

I KILLED 100 ARMED MONKS IN MURAMASA.
THOSE A-HOLES ARE NOW R.I.P.ING UNTIL I GO BACK AND DO IT AGAIN! IN FACT. I HAVEN'T BEAT THEM AGAIN SINCE THIS MORNING. IT WAS LIKE OH HELL NO. ESPECIALLY AFTER I WAS GIVEN AN ITEM THAT PROTECTS FROM 10% OF ENEMY DAMAGE! IM AT LEVEL 41 AND THEY'RE STILL HARD AS SHIT. NO WORRIES THOUGH, I'M GOING TO KEEP FIGHTING THEM UNTIL I HIT LVL100 AND EVOLVE INTO A GYRADOS. YEAHHH BOI!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Finally... haha.
And just for your information, there's much, much, MUCH harder lairs in that game, specially the last one that consists of the harder lairs combined plus the final bosses (I'm not going to spoil anything, but it's epic) from the second endings of both characters (at the same fucking time). If you're having problems with the 100 armed monks, I suggest to keep advancing the game's plot to get better blades. If you have good weapons and items you can beat any lair even under the suggested level. The best blades for the lairs are the ones with continuous attacks (because they give you temporal invulnerability), such a Earth Hornet or Gale, also make sure to have a lot of food.

Rofl. I will keep leveling up! I started playing as the boy to and faced 100 ninjas and beat them at level 9 lmfao.
I DON'T UNDERSTAND WHY THE MONKS ARE SO MUCH HARDER!