Board Thread:General Discussion/@comment-26597443-20150726035127

Actually, after fighting in 5-4 so many times and kebi appears, I've found the rare swords' sign in boss node:

If there's no sword drops in all the regular node, and your way is like this: A - B - E - D - I - L - M - J

-> The boss node may drop rare swords for you.

Trust me, I already have Tsurumaru, Ichigo and Kousetsu when this happened, and thanks to that now there's 3 Tsurumaru (2 smithing), 3 Ichigo (2 smithing) and 3 Kousetsu (2 smithing).

 