Talk:Yukikaze/@comment-201.103.131.54-20140516213032/@comment-66.90.98.66-20140516223805

They drop reasonably often from boss nodes. I got 1 at 4-1 and a few at 4-2 and later boss maps like 5-2. 4-1 is a pretty easy map. I know the earlier maps drop it too, but I generally never farmed them so I don't know. e.g. 2-4 is farmable with subs and spare BB, but I generally don't spend time on it since it takes a lot of RNG to get to boss.