I transmigrated into a two-dimensional world. It looked ordinary enough, but I was certain it wasn't the world I used to live in, because the real world couldn't possibly have colors straight out of an anime. Everything here was far too two-dimensional.
I tried to keep a low profile. What scared me was how hard it was to hide that I was different. To me, most ordinary people looked more or less the same, aside from slight differences in their hairstyles and hair colors, so I often couldn't recognize anyone at all.
So I decided to practice swordsmanship. Not because I liked swords, but so I could draw my sword and kill any witnesses if I mistook someone for someone else, putting an end to those awkward situations.
As it happened, I had a Swordsmanship System. Even simple training could greatly improve my abilities.
I swear that one day, I'll take out all those supporting characters with the same face, so I can tell who's who.