Board Thread:General Discussion/@comment-153.33.58.187-20200429063455/@comment-28251580-20200429064537

The manga does not matter, it's the Light Novel that is the prio1 canon. The manga is simply an adaptation, much like the anime is. The article Unique Skills is based on the Light Novels and twitter responses by the author, so no further information is available. So no, I don't think they were available earlier, because that contradicts what we know so far.