I beleive I first found out about touhou when I was in elemtary school, I think i first heard about it just from when I was first experiencing what the internet was and I saw a video on youtube (that is probably over 10 years old now) of someone doing the extra stage of EoSD and thought it was the most insane thing I've ever seen and it inspired me to start playing the games and to learn more about touhou. (and to this day I still suck ass at touhou).