When I wrote everything I wanted to write, it was over 30 minutes video, so I cut off a lot of thing. As a result, I think you will tired if you watch this video (too fast). There are too many words in this video, so subtitle users may not enjoy it. I guess there is no fun in this video anymore!
I'm afraid I'll give you wrong information by mistranslation because this video explain about common unoriginal background and such.
※To prevent it, I'll explain some words that I used in translating.
・unoriginal background/profiles/personality: Not original background/profiles/personality of Touhou project. That is created by Touhou fan fiction creators. There are two types in this video, well-known one among fan, and my original one.
・the videos here / my videos : the videos that I uploaded/posted
・I / we: In this video, Nitori acts as a poster or Nitori. So when Nitori says "I", it means "poster" or "Nitori".