Board Thread:Questions and Answers/@comment-173.126.253.174-20140207204011/@comment-3250527-20140906053718

Volume 1 Chapter 12 Excerpt: Weapon skills that didn't have clear conditions for appearing are called extra skills. They were sometimes even called random conditions. An example would be Klein's «Katana». But «Katana» wasn't all that rare and appeared quite often as long as you kept training the Curved Sword skill.

Most of the ten-plus extra skills that had been found up until now, «Katana» included, had at least ten people who used each of them. The only exceptions were my «Dual Blades» and one other man's extra skill.

Yeah. Volume 1 pl0x.