Sword weapons in "Beast of Reincarnation" are powerful and highly useful tools in the game. Many swords perform well, and you can acquire them one by one. First up is the Light Mechanical Blade, which can be picked up directly from the wooden high-rise building in the center of the map. It's not too difficult to obtain.
How to Obtain Sword Weapons in Beast of Reincarnation
Chapter 1 - Light Mechanical Blade (Pickup)