Ah, it started with me coming across Night of Nights in my Youtube recommendations. I liked the music and scrolled through the comments speaking of Touhou (Mostly Sakuya, Dio Brando, and pad jokes). Other than that, I didn't bother with it, as I was more invested in anime and manga.
After a year or so (I discovered Night of Nights at 2019), I went for a playthrough of Calamity Mod in Terraria, and saw some pretty badass weapons called 'Resurrection Butterfly', a strong pre-Moon Lord summon weapon and 'Scarlet Devil', an endgame Rogue class weapon. Since I like to consult wikis a lot, I happen to discover Touhou again and I finally decided to try Touhou, after watching some prominent Touhou fanworks such as Cirno's Perfect Math Class. I decided to download Mountain of Faith in this very website last October, and I liked it enough to warrant myself discovering more about the franchise as a whole.
Damn, the music and character designs are good.