1) get Power Source from Ghoul Boss in Lfay, at Undead camp
2) farm fangs from Butler and Maid in Mistmoore 2x of each
3) find An avenging Caitiff in Mistmoore drag him to the ent and root him, unless you have charm then you can do it where he is. but you need to lull/charm him to do the turn in, give him 1 fang from butler, 1 fang from maid and you get a Wakazashi Blade. give the other two fangs to the toon youre trying to get the blades on and do the turn in again for a second blade.
4) Take the two blades, a White Dragon scale which is attained from Taka (ask someone if you dont know) and the power source and combine in a forge. and DONE!